Have you ever wondered what happens when you cry in space? Me neither . . . but a Canadian astronaut on the International Space Station posted a video where he simulates it by pouring a little bit of water into his eye.
Obviously there's no gravity, so the tears don't stream down his face. Instead, they stick to his cheek and form a big ball of water next to his eye.
(Search for "Tears in Space Don't Fall." He does it with a little bit of water at :27, and adds more at :43. This guy actually does a whole serious of videos, to show kids how things work in space.)
(We especially liked the one about How to Wash Your Hands in Space. Because he holds up a bag of soap for the kids to see, and it reads in big letters "Pouch Assy." Which obviously means "Pouch Assembly," but still.)