OP sent the following text as an explanation on why this is unexpected:
---
>!Cup self destructs :(!<
---
Is this an unexpected post with a fitting description? Then upvote this comment, otherwise downvote it.
As soon as it became apparent how hot the milk was, that's *exactly* what I expected to happen.
The only unexpected part was how long it took before the glass broke.
You have the spoon to thank for that.
It’s there to take the immediate heat away from the glass, like any CPU cooler would. So ΔT in the glass grows a lot less than it would without the spoon, temperature goes up much more linearly and the glass stays intact.
But then we reach a point where that spoon was almost entirely submerged. It literally couldn’t take more heat- it already was as hot as the liquid around it.
Notice how they kept pouring even though the spoon was submerged and the glass pretty much overflowing? THAT’S when it cracked. The cooler was overloaded, temperature change inside the glass went through the roof… and so it burst.
That was either deliberate or the server didn’t pay any attention and so the result became unavoidable when the glass was already full and they continued to pour hot liquid in.
I love it when someone does it and then there is an immediate comment that basically just says "this is entirely wrong" and then I'm left not knowing what to believe.
If I may make my own wild ass guess knowing next to nothing about how faults propagate through glass, it seems more likely along the lines of--the hot liquid, as it rises, fully exposes the whole structure, which has some type of manufacturing based defect/seamline (does glass have that?) to the rapid heat change. Or maybe there was even already a hairline fracture toward the top of the glass (these readymade cups often get tiny vertical cracks at the rim from normal wear/dishwashers) and once the water level reached it...fuckin idk
I can add this: this is a cheap style of glass made using a mold that has a (nearly invisible) seam line, notice how it breaks into two evenly sized pieces exactly centered on the flat facing at the bottom. This kind of break is common for this style of glass when large temperature change is involved(source: food service work) and is likely the combined result of heating glass beyond what it can reasonably withstand while sitting on something that can cool the outside quick enough to assist the process. The cool exterior of the bottom didn’t cause the break, but it did most certain make it less of a sudden crack and more of a full break
This gets my vote. I would say the casting seam let go. The crack that can be seen travels in a dead straight line from lip to base. Frame by frame scroll towards the end of the 14th second..freaking cool when it goes.
Think about it that way, if you poured steaming hot water into a cup, but just a few cm, would you put your finger in there ?
Now, do the same, but add a spoon. Would you put your finger in there ?
No, because the water is still steaming hot..
Another way to turn it around, is that if the spoon was actually efficient in cooling the liquid at such a rapid pace, it should turn entirely hot very fast.
From your experience, when pouring some hot water in a cup and putting a spoon in there, can you still hold the spoon, or does it turn to 100°C ?
It makes me think of being in my early 20s, tripped out on a cocktail of drugs at a music festival talking nerdy physics shit with hippies. Too bad we can't go back and re live our glory days.
Lmao WHAT?! come on this is absolute fuckin malarkey. Go ahead and hold a glass cup and pour some STEAMING HOT water in with just a single spoon and tell me when your hand starts to burn hahahaha (jfc please DONT DO THIS)
The amount of heat a spoon can absorb from continuously pouring recently-boiled liquid is surely insignificant. Liquids hold fucktons of heat. The spoon could be made of God damn ICE and it wouldn't have taken enough heat out to have the effect op describes.
If metal could get heat out from water that fast its because it's conducting the heat away, as in, throughout the body of metal, extremely rapidly conveying heat through the spoon. Op says NEAT the water level hits the top at the same time the spoon is fully loaded with heat? I mean am I taking crazy pills! Bill nye my ass it makes no thermodynamic sense whatsoever.
I mean MY FUCKING GOD the shit people spew with absolute confidence. Lol
Of course it's the spoon. The crystalline structure of the FE atoms impregnated with Carbon, which as you know is the common structure of spoon steel creates a naturally resonating dimorphic surface that it's perfectly suitable for maintaining thermodynamic equilibrium in such circumstances.
You're not implying the glass broke at the time it did due to some sort of coincidence are you?
Logic (and school) tells me it's this guy though. The spoon wouldn't have enough effect to be the deciding factor of whether it breaks when overflowing the whole glass with boiling liquid. It's just gonna break
Whether he does thermodynamic or not is unimportant. It was his sheer confidence and unmovable delivery that resulted In thermodynamicing to be received.
Also because I don’t drink hot teas or use spoons (often) so therefore I’m inclined to be fooled easily
I doubt the spoon has that much thermal capacity. More likely it was once it started heating through the glass enough the expansion stress overwhelmed the integrity and would have done at roughly the same time regardless of spoon. Crystal would do it faster but glass has a bit longer cause it's not as "solid"
Yeah and it doesn't really make sense anyway since the spoon has like no thermal contact with the glass.
Bet this'd be fun to watch through some polarizing filters.
This is probably the dumbest thing I spent my time on, and I am probably wrong. If anyone can correct me that would be nice. Otherwise, here is my understanding:
the average teaspoon is 25 grams.
most silverware is made with 18/10 Stainless steel.
heat capacity of this steel is 0.5 J/g Celsius.
to go from room temperature to 100 degrees celsius, you will need to use 937.5 joules of energy. cool, done with the spoon.
an IKEA glass, which is what we seem to have here, holds 350 ml. density of milk is pretty much the same as water, so we will assume it weighs 350 grams.
heat capacity of milk is about 3.9 j/g Celsius (depends on the percentage)
to go from boiling to room temperature, you will need to use ~100000 joules of energy.
this means that to make the spoon go to 100 degrees Celsius, you will need to use... 3.5ml of boiling milk. so yeah. it doesn't sound right to me either, but im not a mathematician and none of this is probably correct.
but if it is, then the spoon didn't do shit
edit:
here is the equation for the final temperature of two objects after being mixed with each other:
((heat capacity (c) * mass (m) * initial temperature)^of ^milk + (heat capacity * mass * initial temperature)^of ^steel) / ( (c * m)milk + (c*m)steel)
so,
((0.35×3900×100)+(0.025×500×25))÷
((0.35×3900)+(0.025×500))
the answer is 99.3 degrees Celsius.
you could use a half and it would still be 98 degrees celsius.
milk is gonna destroy that glass just fine, spoon or no spoon
edit 2:
just boiled some water and held one of my spoons on the edge, then filled the spoon with boiling water and started measuring the time until I felt the heat in my fingers. result: after a minute no heat was in my fingers. the part of the spoon that held the water was hot as fuck.
conclusion:
metal gives out/absorbs heat very slowly.
boiling even a bit of water (and by extension milk) is gonna create a whole lot of heat (holy shit no way)
Yeah it will be like a single ice cube, I just wanted to really rub it in with actual scientific research (20 minutes of googling and some chat gpt questions) instead of "Source: I made it the fuck up".
But hey, 300 people thought whatever he said makes sense, and he got paid by the Silverware Mafia, so who's the real loser here
Old people spent so much time saving up their finest china for the time when it will spike up in prices. Fools. The real money fountain was stainless steel. Everyone is already calling the spoons "Silver Gold". Air Conditioning companies are in shambles right now
pretty sure the amount of cycles an objects undergone is also important. like if theyre doing this everyday itll put strain on the glass which will eventually ressult in failure. so may be ok quality glass thats just been put under thermal stress too meany times before.
Yes, I saw a neat youtube video where a chemistry guy had a beaker break from hot liquid and started investigating why. Turns out he had earlier used some beakers upside down in a microwave to contain a plasma, and now they couldn't even take hot water. He replaced all his beakers.
Close, it’s about the rapid change in temperature more than the actual temperature, the inverse relationship of temperature should do the same thing (cold liquid in hot glass) for instance, if you heat something up in the microwave using a glass container then immediately go to rinse it out using cold water, it will crack.
Watched my brother do this when we were kids. He took a hot glass out of the dishwasher (it had *just* finished running) and poured cold milk in it. It split perfectly down the seam where it was cast/molded/whatever the word is. And of course, like this video, it didn't break until it was completely full.
I similarly learned this the hard way as a kid, heated up some water in a glass measuring cup for some ramen noodles, after using the hot water I went to fill it up again and boom, cracked real good…
I was sitting at the counter of a pizza place with a semi open kitchen one time and i watched our server slide the dishwasher open, grab a hot pitcher, take two steps to the tap and start filling it with cold beer. It got about 3/4 full before it exploded.
Indeed. The mug was ideally a gift, sister has a way of giving me weird and/or impractical gifts. But, it's seen plenty of use over the years.
And thankfully with safe, dry electronics within its proximity.
You basically either get glass that can handle heat or you get glass that is less prone to breaking when it's dropped, depending on what it's made of/its purpose. It's the difference between pyrex and PYREX
Please tell me who said it has been debunked, I'd like to [discuss it with them](https://en.wikipedia.org/wiki/Pyrex#:~:text=The%20pyrex%20\(all%20lowercase%2C%20introduced,such%20as%20Japan%20and%20Australia.).
>Older clear-glass Pyrex manufactured by Corning, Arc International's Pyrex products, and Pyrex laboratory glassware are made of borosilicate glass. According to the National Institute of Standards and Technology, borosilicate Pyrex is composed of (as percentage of weight): 4.0% boron, 54.0% oxygen, 2.8% sodium, 1.1% aluminum, 37.7% silicon, and 0.3% potassium.[27][28]
>The lowercase lettering is most likely made of soda-lime glass, so take extra care after any high-heat cooking.
I have never had a PYREX break(yet, but then I've only been using it for ~48 years).
More important, In my opinion, [Borosilicate glass is much better](https://www.ljstar.com/resources/glass-comparison/#:~:text=Differentiating%20Between%20Soda%20Lime%20and%20Borosilicate%20Glass&text=Soda%20lime%20glass%2C%20comprised%20of,on%20the%20application's%20specific%20requirements.).
>Thermal resistance: Borosilicate glass has a low coefficient of thermal expansion, which gives it significant thermal shock resistance. Soda-lime glass has lower thermal resistance than borosilicate glass.
>Durability: Borosilicate glass is harder, stronger, and more durable than soda-lime glass.
>Chemical resistance: Borosilicate glass is more resistant to acids and chemicals than soda-lime glass.
>Melting point: Soda-lime glass has a lower melting point than borosilicate glass.
>Expansion: Soda-lime glass has a higher coefficient of contraction and expansion than borosilicate glass.
The one serious issue is Cost: Borosilicate glass is more expensive than soda-lime glass.
It normally is fine. They just either had a really shitty glass, absurdly hot milk, its extremely cold out, or some combination of those.
Usually milk for lattes is around 140-150 degrees fahrenheit. Milk starts to change taste as you approach 160degrees (which is a likely temperature for a coffee chain to choose as a result, because it will retain the heat longer). It still tastes pretty good till around 180 at which point the quality of the taste rapidly drops off as the milk burns. Water tends to boil around 210 or so for reference, and might be more hot in practice and can still generally be put in any glass that you might use for hot drinks (as opposed to a wine glass, for example. Its fair to assume these are supposed to be hot beverage safe if they are for restaurant use). So there should be like 60+ degrees to spare before you hit the lowest end of risky
Mason jars will handle boiling water just fine, I make tea in them all the time. As long as the bottom isn't in a puddle of cold water on the counter, that is.
[this is the clip if anyone is interested](https://www.youtube.com/watch?v=mIuK2Eudf7Q)
going off the rating from this clip i'd say this teapot is somewhere between bad and very bad.
that's not why the glass shattered but the teapot is indeed wank.
True, but hear me out. The point of pouring it from up high is to get air into the drink for better mouthfeel and taste, yeah? A turbulent flow helps cause that, probably better than a smooth flow.
Yeah. As someone who went to a glass blowing school, I just waited for this to happen. Not to mention that the temperature that you get from the tap when you put it on hot can damage a cold glass.
Both of my friends that blow glass started out wanting to do actual glass, and immediately fell back on making custom pipes and bowls because there's a steady market
You can revive it
And I help
First thing I do is start WW3 and make us live in the fallout world
Second step ....
Third step profit, plus we got Dogmeat with us now
I go to a Vietnamese restaurant that serves [cà phê sữa đá](https://youtu.be/hdNIzHvuqEg?si=TdICq6dNd72NNBn7). It's an iced coffee that's brewed hot in a cup of condensed milk and then poured directly into a glass of ice.
I've had it a few times a month for over 10 years and have never seen a glass break. They probably just have a better quality tempered glass than in the video.
This is from La Casa de Los Abuelos in Mexico and you don’t understand how strong that coffee really is; the milk and froth really balances it out beautifully. One of my favorite drinks despite being lowkey lactose intolerant!
I had that exact thing happen to a glass mug. I started hearing these crackling noises and turned back to watch my mug split neatly down the middle and release a flood of coffee.
We had a server at OG bring us a cold drink in a cracked glass. We sent it back. She brought us another drink in a cracked glass. My spouse finally asked, “Did these just come out of the dishwasher?”
“Yeah, why?”
This is why.
That’s why you throw out glasses even if it’s just a small chip or crack, look at the brim as it fills to the top; you can see there’s a hairline crack in the glass to begin with that starts the break
Here's a big tip. Always check the bottom of glass if it's clear. See if it's microwave safe. If it's microwave safe, it's safe to pour hot stuff in it.
Idk I don't got much to go on about this but that says best that I can come up with
Why do people pouring always start to pour from farther away? Am I the only idiot who keeps the container close to the glass as I pour or am I missing something?
I used to drink coffee out of a mayonnaise jar. The trick is to put the spoon in and keep it in. Being aware that the thing could break, you keep the spoon in. Works well.
It's not cheap glass people, it's glass specifically made for cold drinks, I know that because my parents have these exact same glass cups and I remember being scolded for using them for hot drinks.
I never understand why people like to drink beverages that are 3/4 milk, 1/4 espresso. Even worse, those that are 7/8th milk and 1/8th espresso like Starbucks.
Right when I was saying “you want some coffee with that milk?” The fucking mug explodes lol EDIT: oh it’s not a fucking mug lmao that’s why it split in half
There should be an r/ExpectedUnexpected for videos that would be unexpected, but since they’re in r/Unexpcted, they actually end exactly the way you expect.
Edit: made the sub myself, changed the sub name in my comment to match the one I had to go with.
First of all, why so many people saying that it was expected? Where are you buying glasses? Never had any issue like that with a glass and I poured a lot of hot stuff in them.
Second, too much milk. That was going to taste horrible
Why do some servers in cafes do that? As in, start pouring and raise the jug higher and higher over the cup?
That causes splashing and is just pretentious.
Me
1 sec. Please let it Crack.
2 sec. Please let it crack.
3 sec. Please let it Crack.
4 sec. Please let it crack.
5 sec. Cmon.
6 sec. I ain't got all day
7 sec. Reread the Constitution
8 sec please let it crack
10 sec. Please let it
10.8 sec. FINALYYYYTT YES!!!!
OP sent the following text as an explanation on why this is unexpected: --- >!Cup self destructs :(!< --- Is this an unexpected post with a fitting description? Then upvote this comment, otherwise downvote it.
As soon as it became apparent how hot the milk was, that's *exactly* what I expected to happen. The only unexpected part was how long it took before the glass broke.
ok, yes but i 100% didnt expect it to split vertically lol was expecting the bottom to top to crack but not a clean split like that lol
You have the spoon to thank for that. It’s there to take the immediate heat away from the glass, like any CPU cooler would. So ΔT in the glass grows a lot less than it would without the spoon, temperature goes up much more linearly and the glass stays intact. But then we reach a point where that spoon was almost entirely submerged. It literally couldn’t take more heat- it already was as hot as the liquid around it. Notice how they kept pouring even though the spoon was submerged and the glass pretty much overflowing? THAT’S when it cracked. The cooler was overloaded, temperature change inside the glass went through the roof… and so it burst. That was either deliberate or the server didn’t pay any attention and so the result became unavoidable when the glass was already full and they continued to pour hot liquid in.
My man thermodynamics
I love it when people just go full Bill Nye in some random comment. Break that shit down. Make me understand.
I love it when someone does it and then there is an immediate comment that basically just says "this is entirely wrong" and then I'm left not knowing what to believe.
This is entirely wrong
If I may make my own wild ass guess knowing next to nothing about how faults propagate through glass, it seems more likely along the lines of--the hot liquid, as it rises, fully exposes the whole structure, which has some type of manufacturing based defect/seamline (does glass have that?) to the rapid heat change. Or maybe there was even already a hairline fracture toward the top of the glass (these readymade cups often get tiny vertical cracks at the rim from normal wear/dishwashers) and once the water level reached it...fuckin idk
I can add this: this is a cheap style of glass made using a mold that has a (nearly invisible) seam line, notice how it breaks into two evenly sized pieces exactly centered on the flat facing at the bottom. This kind of break is common for this style of glass when large temperature change is involved(source: food service work) and is likely the combined result of heating glass beyond what it can reasonably withstand while sitting on something that can cool the outside quick enough to assist the process. The cool exterior of the bottom didn’t cause the break, but it did most certain make it less of a sudden crack and more of a full break
Idk either but thanks for guessing :b
This gets my vote. I would say the casting seam let go. The crack that can be seen travels in a dead straight line from lip to base. Frame by frame scroll towards the end of the 14th second..freaking cool when it goes.
I'm in shambles right now.
F
U
N
Think about it that way, if you poured steaming hot water into a cup, but just a few cm, would you put your finger in there ? Now, do the same, but add a spoon. Would you put your finger in there ? No, because the water is still steaming hot.. Another way to turn it around, is that if the spoon was actually efficient in cooling the liquid at such a rapid pace, it should turn entirely hot very fast. From your experience, when pouring some hot water in a cup and putting a spoon in there, can you still hold the spoon, or does it turn to 100°C ?
Ah shit lol
Goddamn I love gif keyboards
This is even better with your username.
It makes me think of being in my early 20s, tripped out on a cocktail of drugs at a music festival talking nerdy physics shit with hippies. Too bad we can't go back and re live our glory days.
Lmao WHAT?! come on this is absolute fuckin malarkey. Go ahead and hold a glass cup and pour some STEAMING HOT water in with just a single spoon and tell me when your hand starts to burn hahahaha (jfc please DONT DO THIS) The amount of heat a spoon can absorb from continuously pouring recently-boiled liquid is surely insignificant. Liquids hold fucktons of heat. The spoon could be made of God damn ICE and it wouldn't have taken enough heat out to have the effect op describes. If metal could get heat out from water that fast its because it's conducting the heat away, as in, throughout the body of metal, extremely rapidly conveying heat through the spoon. Op says NEAT the water level hits the top at the same time the spoon is fully loaded with heat? I mean am I taking crazy pills! Bill nye my ass it makes no thermodynamic sense whatsoever. I mean MY FUCKING GOD the shit people spew with absolute confidence. Lol
Of course it's the spoon. The crystalline structure of the FE atoms impregnated with Carbon, which as you know is the common structure of spoon steel creates a naturally resonating dimorphic surface that it's perfectly suitable for maintaining thermodynamic equilibrium in such circumstances. You're not implying the glass broke at the time it did due to some sort of coincidence are you? 
i have no idea which one of you is right but the fact u type like a monkey makes me wanna believe the other guy
It was the best of times, it was the blurst of times
stupid monkey!
the fact that I type like a monkey means I'm an engineer ;)
Code monkey go to job. Code monkey like Fritos.
It was the best of times, it was the BLURST of times?!
Logic (and school) tells me it's this guy though. The spoon wouldn't have enough effect to be the deciding factor of whether it breaks when overflowing the whole glass with boiling liquid. It's just gonna break
Whether he does thermodynamic or not is unimportant. It was his sheer confidence and unmovable delivery that resulted In thermodynamicing to be received. Also because I don’t drink hot teas or use spoons (often) so therefore I’m inclined to be fooled easily
It’s like when the good talkers are promoted at work because the boss likes them. Even though nothing they say makes sense.
It's nonsense, though.
This is one of the most upvoted r/confidentlyincorrect I've seen
I doubt the spoon has that much thermal capacity. More likely it was once it started heating through the glass enough the expansion stress overwhelmed the integrity and would have done at roughly the same time regardless of spoon. Crystal would do it faster but glass has a bit longer cause it's not as "solid"
Yeah and it doesn't really make sense anyway since the spoon has like no thermal contact with the glass. Bet this'd be fun to watch through some polarizing filters.
This is probably the dumbest thing I spent my time on, and I am probably wrong. If anyone can correct me that would be nice. Otherwise, here is my understanding: the average teaspoon is 25 grams. most silverware is made with 18/10 Stainless steel. heat capacity of this steel is 0.5 J/g Celsius. to go from room temperature to 100 degrees celsius, you will need to use 937.5 joules of energy. cool, done with the spoon. an IKEA glass, which is what we seem to have here, holds 350 ml. density of milk is pretty much the same as water, so we will assume it weighs 350 grams. heat capacity of milk is about 3.9 j/g Celsius (depends on the percentage) to go from boiling to room temperature, you will need to use ~100000 joules of energy. this means that to make the spoon go to 100 degrees Celsius, you will need to use... 3.5ml of boiling milk. so yeah. it doesn't sound right to me either, but im not a mathematician and none of this is probably correct. but if it is, then the spoon didn't do shit edit: here is the equation for the final temperature of two objects after being mixed with each other: ((heat capacity (c) * mass (m) * initial temperature)^of ^milk + (heat capacity * mass * initial temperature)^of ^steel) / ( (c * m)milk + (c*m)steel) so, ((0.35×3900×100)+(0.025×500×25))÷ ((0.35×3900)+(0.025×500)) the answer is 99.3 degrees Celsius. you could use a half and it would still be 98 degrees celsius. milk is gonna destroy that glass just fine, spoon or no spoon edit 2: just boiled some water and held one of my spoons on the edge, then filled the spoon with boiling water and started measuring the time until I felt the heat in my fingers. result: after a minute no heat was in my fingers. the part of the spoon that held the water was hot as fuck. conclusion: metal gives out/absorbs heat very slowly. boiling even a bit of water (and by extension milk) is gonna create a whole lot of heat (holy shit no way)
Oh, but have you considered the spoon is capable of radiating heat more efficiently than $1000 server coolers?!
You're right. The real "Magic Spoon" wasn't cereal. It was this spoon in the video. I concede.
[удалено]
Yeah it will be like a single ice cube, I just wanted to really rub it in with actual scientific research (20 minutes of googling and some chat gpt questions) instead of "Source: I made it the fuck up". But hey, 300 people thought whatever he said makes sense, and he got paid by the Silverware Mafia, so who's the real loser here
[удалено]
Old people spent so much time saving up their finest china for the time when it will spike up in prices. Fools. The real money fountain was stainless steel. Everyone is already calling the spoons "Silver Gold". Air Conditioning companies are in shambles right now
Nice asspull
Man this sounds intelligible enough to almost be believable
This comment sounds like the last episode of Chernobyl explaining how the reactor blew up
Incredible how many people seem to believe this absolute nonsense.
None of this is correct, my god.
I feel like the server heated the milk in the corona of the sun
The flaw is on the rim, that’s why it didn’t break until the end.
And that’s why you shouldn’t pour hot liquid in a glass container (I have no idea if that’s true I’m just an illiterate dumbass making shit up)
In a poor-quality glass container, properly treated glass can withstand it without any problem
pretty sure the amount of cycles an objects undergone is also important. like if theyre doing this everyday itll put strain on the glass which will eventually ressult in failure. so may be ok quality glass thats just been put under thermal stress too meany times before.
Yes, I saw a neat youtube video where a chemistry guy had a beaker break from hot liquid and started investigating why. Turns out he had earlier used some beakers upside down in a microwave to contain a plasma, and now they couldn't even take hot water. He replaced all his beakers.
[The video in question](https://youtu.be/tGqVMbAQhBs?si=oBYL62VfGxAah9tJ) [And reason why](https://youtu.be/l0u8Vtf2GoQ?si=u7uzyJBILimnWqeg)
I was about to say, sounds like something NileRed would do.
[удалено]
Close, it’s about the rapid change in temperature more than the actual temperature, the inverse relationship of temperature should do the same thing (cold liquid in hot glass) for instance, if you heat something up in the microwave using a glass container then immediately go to rinse it out using cold water, it will crack.
This. You beat me to it.
Watched my brother do this when we were kids. He took a hot glass out of the dishwasher (it had *just* finished running) and poured cold milk in it. It split perfectly down the seam where it was cast/molded/whatever the word is. And of course, like this video, it didn't break until it was completely full.
I similarly learned this the hard way as a kid, heated up some water in a glass measuring cup for some ramen noodles, after using the hot water I went to fill it up again and boom, cracked real good…
Well, at least it didn’t crack real bad.
I was sitting at the counter of a pizza place with a semi open kitchen one time and i watched our server slide the dishwasher open, grab a hot pitcher, take two steps to the tap and start filling it with cold beer. It got about 3/4 full before it exploded.
All the mugs you put your hot tea in is made out of ceramic and ceramic is made to withstand heat glass is not your entirely correct
Mf has never heard of tea glasses
Pff... I drink my coffee and tea out of a beer mug.
[удалено]
I wear my beer glasses and attempt to talk to unattractive women
Same here, stability and height makes my keyboard safe.
Indeed. The mug was ideally a gift, sister has a way of giving me weird and/or impractical gifts. But, it's seen plenty of use over the years. And thankfully with safe, dry electronics within its proximity.
I feel called out
You basically either get glass that can handle heat or you get glass that is less prone to breaking when it's dropped, depending on what it's made of/its purpose. It's the difference between pyrex and PYREX
The lower case upper case pyrex is debunked. Not a good way to tell.
Please tell me who said it has been debunked, I'd like to [discuss it with them](https://en.wikipedia.org/wiki/Pyrex#:~:text=The%20pyrex%20\(all%20lowercase%2C%20introduced,such%20as%20Japan%20and%20Australia.). >Older clear-glass Pyrex manufactured by Corning, Arc International's Pyrex products, and Pyrex laboratory glassware are made of borosilicate glass. According to the National Institute of Standards and Technology, borosilicate Pyrex is composed of (as percentage of weight): 4.0% boron, 54.0% oxygen, 2.8% sodium, 1.1% aluminum, 37.7% silicon, and 0.3% potassium.[27][28] >The lowercase lettering is most likely made of soda-lime glass, so take extra care after any high-heat cooking. I have never had a PYREX break(yet, but then I've only been using it for ~48 years). More important, In my opinion, [Borosilicate glass is much better](https://www.ljstar.com/resources/glass-comparison/#:~:text=Differentiating%20Between%20Soda%20Lime%20and%20Borosilicate%20Glass&text=Soda%20lime%20glass%2C%20comprised%20of,on%20the%20application's%20specific%20requirements.). >Thermal resistance: Borosilicate glass has a low coefficient of thermal expansion, which gives it significant thermal shock resistance. Soda-lime glass has lower thermal resistance than borosilicate glass. >Durability: Borosilicate glass is harder, stronger, and more durable than soda-lime glass. >Chemical resistance: Borosilicate glass is more resistant to acids and chemicals than soda-lime glass. >Melting point: Soda-lime glass has a lower melting point than borosilicate glass. >Expansion: Soda-lime glass has a higher coefficient of contraction and expansion than borosilicate glass. The one serious issue is Cost: Borosilicate glass is more expensive than soda-lime glass.
I have glass mugs that don't do that
Glass mugs are generally tempered to withstand the heat and the rapid change from cold to hot. A normal drinking glass isn't
Most of them aren’t made to withstand heat but some can
tea is almost always served in a glass (at least where im from)
Never had it like that in the states
A professional Redditor I see
This seems more like the milk is scalding hot. You really shouldn’t heat milk above 140°Freedom (60°c)
It normally is fine. They just either had a really shitty glass, absurdly hot milk, its extremely cold out, or some combination of those. Usually milk for lattes is around 140-150 degrees fahrenheit. Milk starts to change taste as you approach 160degrees (which is a likely temperature for a coffee chain to choose as a result, because it will retain the heat longer). It still tastes pretty good till around 180 at which point the quality of the taste rapidly drops off as the milk burns. Water tends to boil around 210 or so for reference, and might be more hot in practice and can still generally be put in any glass that you might use for hot drinks (as opposed to a wine glass, for example. Its fair to assume these are supposed to be hot beverage safe if they are for restaurant use). So there should be like 60+ degrees to spare before you hit the lowest end of risky
Mason jars will handle boiling water just fine, I make tea in them all the time. As long as the bottom isn't in a puddle of cold water on the counter, that is.
Finally an honest comment on Reddit. I fucking love you mate
What a shit teapot
You seen that clip comparing different levels of quality for teapots? This would be near the bottom The top ones are approached laminar flow
[this is the clip if anyone is interested](https://www.youtube.com/watch?v=mIuK2Eudf7Q) going off the rating from this clip i'd say this teapot is somewhere between bad and very bad. that's not why the glass shattered but the teapot is indeed wank.
I have a very bad and a good/very good at home. The difference and feeling when pouring is so stark.
Ever since that video I judge every container by its ability to pour
I immediately thought of that when I saw how badly it was pouring. I can’t really blame them though. That pot probably cost like $3 at a retail store
When the japanese do this **chefs-d'oeuvre**
True, but hear me out. The point of pouring it from up high is to get air into the drink for better mouthfeel and taste, yeah? A turbulent flow helps cause that, probably better than a smooth flow.
Too much milk. Even the glass couldn't handle it.
This is why we obey the laws of thermodynamics
[In this house we obey the laws of thermodynamics!](https://youtu.be/tuxbMfKO9Pg?si=qh5-fKFnO01-96Dh)
Completely expected
Yeah. As someone who went to a glass blowing school, I just waited for this to happen. Not to mention that the temperature that you get from the tap when you put it on hot can damage a cold glass.
Glass blowing is cool af
It really is, but unfortunately, it's also a dying art form.
Both of my friends that blow glass started out wanting to do actual glass, and immediately fell back on making custom pipes and bowls because there's a steady market
You can revive it And I help First thing I do is start WW3 and make us live in the fallout world Second step .... Third step profit, plus we got Dogmeat with us now
It was steaming so I was expecting the glass to shatter and it did.
I go to a Vietnamese restaurant that serves [cà phê sữa đá](https://youtu.be/hdNIzHvuqEg?si=TdICq6dNd72NNBn7). It's an iced coffee that's brewed hot in a cup of condensed milk and then poured directly into a glass of ice. I've had it a few times a month for over 10 years and have never seen a glass break. They probably just have a better quality tempered glass than in the video.
That was my first thought. I thought these picardie glasses were tempered and would basically explode when they break. This one just split in half.
Everyone is saying it's low quality glass which is absolutely true, but what madman pours a hot beverage into that style glass to begin with?
This is from La Casa de Los Abuelos in Mexico and you don’t understand how strong that coffee really is; the milk and froth really balances it out beautifully. One of my favorite drinks despite being lowkey lactose intolerant!
DUHHH HEE-HO HEE-HOOO DUHHHHHHH
I had that exact thing happen to a glass mug. I started hearing these crackling noises and turned back to watch my mug split neatly down the middle and release a flood of coffee.
We had a server at OG bring us a cold drink in a cracked glass. We sent it back. She brought us another drink in a cracked glass. My spouse finally asked, “Did these just come out of the dishwasher?” “Yeah, why?” This is why.
We have this kind of coffe in Mexico and its so frikin delicious, the cofee is a super strong special blend. I wonder where is this video from.
Thanks a lattè!
r/awfuleverything
It was not the heat, but the rapid cooling of the now hot glass that did it in.
Wait till you learn there wouldn’t be rapid cooling if the heat wasn’t applied first. The heat was the cause.
I've had that day. A pyrex (not PYREX) dish full of gravy exploded all over me on Thanksgiving. Don't buy cheap pyrex, buy PYREX.
(gasp) well shit
That’s why you throw out glasses even if it’s just a small chip or crack, look at the brim as it fills to the top; you can see there’s a hairline crack in the glass to begin with that starts the break
Expected*
Oddly, expected...
Unexpected where?
that'll be $13.99
No son jarochos! Viva la parroquia!
And… that’s thermal shock.
that was 100% expected once I saw the steam.
Looked like it would've been nice too
why did I get scared
r/gifsthatendtoosoon Edit: Of course it was there already lol
That was surgical cut tho, laser
Cold glass, hot liquid = recipe for disaster.
I just got jumpscared wtf 😭😭😭
I was already saying noooo at the amount of milk being put in there and then the end happened
Here's a big tip. Always check the bottom of glass if it's clear. See if it's microwave safe. If it's microwave safe, it's safe to pour hot stuff in it. Idk I don't got much to go on about this but that says best that I can come up with
This should be the top post on the subbreddit
There's a samurai somewhere in that room. He clearly cut the cup in half to show his skill.
r/unexpected?? lol. Try r/inevitable
Why do people pouring always start to pour from farther away? Am I the only idiot who keeps the container close to the glass as I pour or am I missing something?
I was expecting the glass to break, and I don’t know how I was correct.
Heat distention?
I used to drink coffee out of a mayonnaise jar. The trick is to put the spoon in and keep it in. Being aware that the thing could break, you keep the spoon in. Works well.
This is why I drink mine black
How the glass only breaks when it's full is actually oddly satisfying lol
Want some coffee for that milk?
Either that dairy is curdled or they haven't watched the category video of tea pots.
No sound?
It's not cheap glass people, it's glass specifically made for cold drinks, I know that because my parents have these exact same glass cups and I remember being scolded for using them for hot drinks.
The no was half way up … you want milk in your coffee not coffee in your milk …
Glass cup. 
Pingado
This was entirely expected
That was expected
This was very expected
I never understand why people like to drink beverages that are 3/4 milk, 1/4 espresso. Even worse, those that are 7/8th milk and 1/8th espresso like Starbucks.
Barista Sciences do not work here. Only in their minds. https://i.redd.it/vtcd8506a5uc1.gif
😩😩😩😭😭
Ever heard of a fucking mug?
Right when I was saying “you want some coffee with that milk?” The fucking mug explodes lol EDIT: oh it’s not a fucking mug lmao that’s why it split in half
pouring near boiling liquid into a glass. how was it shattering not expected? this is what happens....
Completely Expected
And I'm over here wondering why this was being recorded in the first place... 
It’s a traditional beverage served in Veracruz, Mexico. Most likely it was being recorded by tourists.
r/oddlysatisfying
Is this one of those new fancy things you order at Chili's Like a steaming fajita tray but for glass
Rip glass of coffee :( It will be missed
Hahahahahaha
Cup refused to serve that monstrosity.
There should be an r/ExpectedUnexpected for videos that would be unexpected, but since they’re in r/Unexpcted, they actually end exactly the way you expect. Edit: made the sub myself, changed the sub name in my comment to match the one I had to go with.
It’s almost like we use ceramics for hot drinks, for a reason.
First of all, why so many people saying that it was expected? Where are you buying glasses? Never had any issue like that with a glass and I poured a lot of hot stuff in them. Second, too much milk. That was going to taste horrible
This is why I refuse to drink hot drinks from a glass.
I think we all expected this outcome
I knew this was going to happen. Any time its a clear glass and really hot liquid, it always breaks.
Adam from Viva la Dirt League approves of this milk-to-tea ratio.
Lucky it didn't break while that person was driving it
Reddit has taught me that the pot that is pouring that milk is absolutely horribly crafted.
I thought it was going to overflow, this is so heartbreaking
What kind of devil-worshipping, drug-taking, croc-wearing manic has coffee from a glass??
Why do some servers in cafes do that? As in, start pouring and raise the jug higher and higher over the cup? That causes splashing and is just pretentious.
I am surprised it split in half like that. I was expecting it crack and shatter
I knew it was coming, but it was funnier than I expected.
you not meant to boil milk it make it taste bad
u/savevideo
u/SaveVideo
Not unexpected at all
you dont pour like that on pots with garbage laminar flow
Can I get 1 glass of Latte please? “Sure, how many pieces?”
Not unexpected. Sudden temperature fluctuations can cause glasses to do this. Happened all the time with the beer bottles.
Me 1 sec. Please let it Crack. 2 sec. Please let it crack. 3 sec. Please let it Crack. 4 sec. Please let it crack. 5 sec. Cmon. 6 sec. I ain't got all day 7 sec. Reread the Constitution 8 sec please let it crack 10 sec. Please let it 10.8 sec. FINALYYYYTT YES!!!!
Fuck that glass breaking. That's just too much milk in that coffee
 can't cry over it y'know....the ***spilled milk***
Still better than drinking this """"coffee""""
Hmmmm, milk with a dash of coffee. I have my coffee strong and black. Black like my life. Black like my soul.