Oh, please. Give me a break. We’re all grown-ups here. Even if you’re reading this in the smart phone cubby you’ve dug into your Intro to College book in the pre-College 101 class that your mom is making you take because she wants you to be prepared, so it looks like you’re reading your Intro to College book — which isn’t actually what you should be doing in class, but which is certainly better than looking at your phone — which is what you are actually doing — you aren’t a child. We can discuss poopie and pee-pee like grown-ups. As we all know, sometimes mommies and daddies and babies have to go poopie and pee-pee, and sometimes those mommies and daddies and babies are astronauts on board the International Space Station. That is just a fact of life! If mommies and daddies and babies are going to eat and breathe and make their little hearts beat, they have to go poopie and pee-pee in the potty. It’s not a joke, it’s not funny, it’s just life. But what if the potty is in a gravity-free environment, and you don’t want the poopie and pee-pee to go everywhere? Well, that’s a good question!

Everything about this answer is sincerely very good and I hope Chris Hadfield makes many more explanatory Internet videos about human space grossness. I can’t wait to tell all of my friends about this when there is a lull in conversation! THANK YOU, POOPIE AND PEE-PEE AND MR. HADFIELD! (Via LaughingSquid.)