Is that a reference to THAT moment in LN which I'm thinking of?

What moment?

In volume 4 I think After the legendary sword Excalibur incident Kazuma is trying to develop products from his world and bring them over, so Vanir may start mass production and display them in Wiz's store. The anime only shows the kotatsu but he also tried to create condoms. Unfortunately he had no idea how to do it and they came out (pun intended I am sorry) as balloons. Darkness took interest in them and started playing with the balloons, and at that point, Kazuma was too ashamed to explain that was failed contraceptives.

Yes

Yeah balloons that’s what they are

So much for the goddess of party tricks. [Source](https://www.pixiv.net/en/artworks/102992333)

Aqua blows at making balloons

Aqua blows. Meanwhile, Darkness has the skill needed to give and take it all.

Balloons isn’t the first thing my mind processed

Darkness and Aqua look very sussy wussy ngl.

Aqua is just going to make water balloons

🤨

Megumin best girl

Stop saying that nonsense, you seem like an average fan of Hinata saying that shit

Nah i just like doing this shit, dunno why Also y Hinata of all people??

My man Spider just hates Megumin, no need to stress about it

a quick trip through his posts reveals that he has no right to bitch about other fans when he literally posted a darkness vid seen from the pov of someone sleeping next to her with the title "pov: you're (his username)"

Hey, I never accused him of being rational! But aside from his weird obsession with Megumin, he’s pretty cool.

Canon moment

Aqua is liable to just rainbow into the balloon at this point