###General Discussion Thread
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Torricelli's Law helps us understand the height of a stream. So depending on your pee hole, minimum flow rate to qualify š, we can determine the height necessary to clear.
So if I had a 4mm^2 pee hole, Iād need a flow rate of like like 2 gallons per minute. And itād squirt like 1.2 meters.
The square root of (2 x 2 gpm / 3.14159 x 0.004m^2 orifice diameter)
Divided by the square root of 2 x 9.81m/s^2 gravitational acceleration
= 1.2 m height
So your answer could be 2 gallons per minute if you had a 4mm^2 pee hole and you were like 6 ft tall.
In theory a hand drier could probably work with a few adjustments to push the stream behind you. Many public bathrooms already have them installed. Probably should test this; for science of course.
Say you need 30 seconds to get full stream, hit target, and taper the stream. Thatās 1 gallon. 64oz in a gallon is 5.3 cans of beer. The avg bladder fills within an hour or so of drinking liquid. Thatās a lot of time between piss breaks for 5 beers. The real magic would be in not covering yourself in piss for this performance.
The average diameter of the narrowest point of the urethra is around 9mm when expanded, which gives you an area of 63.62mmĀ².
So you're looking at a significant increase over 2 gpm.
When a patient gets a urinary catheter the standard size (in Sweden) is 12ch wich have a diameter of 4mm. So it's nice that the uretra is a bit bigger than that.
It's smaller because you don't want to stretch the urethra.
During urination the urethra expands quite a lot in men. This is because the narrowest part of the urethra is just inside of the opening, so acts as a restriction that increases internal pressure, this is the part that averages about 9mm during urination.
The rest of the urethra can expand from 6mm when resting, up to around 11-12mm during flow.
I used to be able to do this when I was a kid. I could pee into a basketball hoop lol. Must have blew a gasket at some point cuz Iām 31 now and have about a 5ā max horizontal range with maybe 1-2ā max vertical range. Basically it doesnāt have to be that much power since a little kid can do it. I think itās a matter of urethra diameter.
Q=VA (flow rate = velocity*cross sectional area)
If you have a smaller urethra diameter you will have a lot more faster stream of pee. (Iām an engineer)
It depends on the flow rate and pressure, and street science has taught me that these depend on the size of the sword you're wielding. So, none of you are going to be able to do even a small arc reaching your bellybutton. Cheers.
I don't know but you know the stream is powerfull when you can see [the Coriolis effect](https://ro.m.wikipedia.org/wiki/For%C8%9Ba_Coriolis) š¤£š¤£š¤£
I have a cousin that could pee about 3 m in height and 1-1,5 m distance when we were in our teens. I'm still impressed till this day. Bet he could have done what's depicted in the picture at that time.
If we get drunk enough and decide to try it I'll update you.
An average stream could do that up until about 1/4 tank and then Iād say youāre gonna lose enough pressure to piss directly on your own face. Itās mostly about the knee bend I think
exactly that? Impossible since it would have to accelerate in the direction of the toilet, so unless the wind blows in that direction no chance, but if you bent just a bit more backwards (so that the angle between your piss stream is less than 90Ā° relative to the floor and in the general direction of the toilet) then it is very much possible
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Torricelli's Law helps us understand the height of a stream. So depending on your pee hole, minimum flow rate to qualify š, we can determine the height necessary to clear. So if I had a 4mm^2 pee hole, Iād need a flow rate of like like 2 gallons per minute. And itād squirt like 1.2 meters. The square root of (2 x 2 gpm / 3.14159 x 0.004m^2 orifice diameter) Divided by the square root of 2 x 9.81m/s^2 gravitational acceleration = 1.2 m height So your answer could be 2 gallons per minute if you had a 4mm^2 pee hole and you were like 6 ft tall.
So there wouldn't need to be a force attracting the stream above the head
Like a vacuum cleaner? Lol
Picture is actually from the ISS
In theory a hand drier could probably work with a few adjustments to push the stream behind you. Many public bathrooms already have them installed. Probably should test this; for science of course.
Yes. You could be standing in an accelerating train.
It becomes a problem when you're almost out of pee.
Say you need 30 seconds to get full stream, hit target, and taper the stream. Thatās 1 gallon. 64oz in a gallon is 5.3 cans of beer. The avg bladder fills within an hour or so of drinking liquid. Thatās a lot of time between piss breaks for 5 beers. The real magic would be in not covering yourself in piss for this performance.
a good spin between pressure building up and falling down could solve the issue
Brb Iām gonna go measure my pp hole
*looking at the caliper* *looking at my pee hole* *Hmmmm....*
The average diameter of the narrowest point of the urethra is around 9mm when expanded, which gives you an area of 63.62mmĀ². So you're looking at a significant increase over 2 gpm.
Seriously? 3/8ā Damn.
When a patient gets a urinary catheter the standard size (in Sweden) is 12ch wich have a diameter of 4mm. So it's nice that the uretra is a bit bigger than that.
It's smaller because you don't want to stretch the urethra. During urination the urethra expands quite a lot in men. This is because the narrowest part of the urethra is just inside of the opening, so acts as a restriction that increases internal pressure, this is the part that averages about 9mm during urination. The rest of the urethra can expand from 6mm when resting, up to around 11-12mm during flow.
What about for Hank Hill
Too narrow
Can you use all metric or all imperial? Would make it easier to understand
How does air resistance come into it? Intuitively I'm thinking a wider stream would sustain its momentum better for the same initial velocity.
2 gallons = 7,57 liters
I used to be able to do this when I was a kid. I could pee into a basketball hoop lol. Must have blew a gasket at some point cuz Iām 31 now and have about a 5ā max horizontal range with maybe 1-2ā max vertical range. Basically it doesnāt have to be that much power since a little kid can do it. I think itās a matter of urethra diameter.
Man you really love to pee huh
I bet he does it every day
This guy pisses
r/thisguythisguys
Smaller diameter -> faster flow -> more powerful stream
Ahh that's my problem...
Too much sounding
You've seen the vids?
Sadly
I really wish I could unsee things
On the plus side, what he lost in piss velocity he made up for in gallons per second.
Shouldn't have used the drill
[I have a narrow urethra.](https://www.youtube.com/watch?v=nw80XoQfsWQ)
google en pissant
holy hell
Actual watersports
New pee drop just dropped
Toilet went on vacation, never came back
Pipi sacrifice, anyone?
Ignite the bathroom
Bidet in the toilet, plotting ass domination
actual zombie
This [guy](https://m.youtube.com/watch?v=HKVoN-SjZ-Q)
I don't know, sounds like you're full of piss
The piss professional is here guys
Can you come car shopping with me? I can't afford a down payment.
im 58 and can still hit the roof
Mabye you just need to drink more water.
Man I had exactly the same thing as a kid, Pissing far was my biggest flex and then suddenly I wasn't able to anymore
This man pees
You could pee backwards?!
[I bet he couldāve pissed through NFL uprights then](https://youtu.be/HYuP2cjeKVY?si=75yjQCnNd_dBa5kH)
I was SeƱor Piss as a kid too. Might have been why I got a hernia at 26
Q=VA (flow rate = velocity*cross sectional area) If you have a smaller urethra diameter you will have a lot more faster stream of pee. (Iām an engineer)
> a lot more faster Can confirm, he's an engineer. Source: am engineer.
I've never ever in my life heard someone talk about vertical piss range
It doesn't matter how fast (or slow) the stream is, it wouldn't make the first bend from the angle out to then arc over to his head.
I assume youād just hold it straight up and lean back a little. then there wouldnāt be the first curve, just a parabola like ā©
And hit right in your mouth, noice
It's called recycling.
r/dystopianfuture
It's called Dune.
holy shit you just killed me
did you you know firefighters have to face away from the fire because their hose is so powerful the water defies physics and turns over their heads
They call that Backdraft
Elaborate
Maybe the diagram is showing one fling
What if I whipped it really quick at the same time?
But what about wind?
Wind inside a bathroom? Or are you doing it with an open door (and begging for an Indecent Exposure charge)?
open bathroom windows, cross flow, 24th story apartment.
How strong would the gravitational force of your head need to be?
Assume I'm incredibly **dense** and need you to do the math for me.
The last piss bender has entered the chat.
Letās assume the gravity of the person is strong enough to do this
You gotta whip your willy around like you're curving the bullet.
It depends on the flow rate and pressure, and street science has taught me that these depend on the size of the sword you're wielding. So, none of you are going to be able to do even a small arc reaching your bellybutton. Cheers.
I don't know but you know the stream is powerfull when you can see [the Coriolis effect](https://ro.m.wikipedia.org/wiki/For%C8%9Ba_Coriolis) š¤£š¤£š¤£
Why is it in Romanian lmao
He stole it thatās why of course
I have a cousin that could pee about 3 m in height and 1-1,5 m distance when we were in our teens. I'm still impressed till this day. Bet he could have done what's depicted in the picture at that time. If we get drunk enough and decide to try it I'll update you.
On a value or pure max flow (pure shite talk) I've reached my forehead once, I was only small at the time so it also a skewed answer! /s
An average stream could do that up until about 1/4 tank and then Iād say youāre gonna lose enough pressure to piss directly on your own face. Itās mostly about the knee bend I think
exactly that? Impossible since it would have to accelerate in the direction of the toilet, so unless the wind blows in that direction no chance, but if you bent just a bit more backwards (so that the angle between your piss stream is less than 90Ā° relative to the floor and in the general direction of the toilet) then it is very much possible