This hurts plenty (the tip of your fingers are packed with nerves), and it sometimes rips the entire nail out of the finger. That process is known as "fingernail delamination," and we're telling you that name in case a salon offers that treatment and you're tempted to order it, not recognizing the manicurist as Patrick Bateman. Astronauts actually manage to get along just fine once the nail comes out, though. We guess when you're already wearing cyborg hands, the presence or absence of a fingernail isn't much of an issue.
little heaters to keep fingers warm, which is adorable. " width="350" height="263" class="lazy" data-src="https://s3.crackedcdn.com/phpimages/article/2/0/4/732204_v2.jpg" />NASA
No, your nail flying out isn't that weird when you're already living the wild life of an astronaut. It's a little weirder for other people, though. Like runners. If you run marathons, there's a good chance your toenail might get ripped off at some point during the race, so a lot of runners take preemptive measures. And by "preemptive measures," we don't mean "pick out extra-thick socks" -- we mean they rip out their toenails themselves in advance and pour acid on the nailbeds to keep them from growing back. Photos exist of this kind of naked feet, and we flatly refuse to reproduce them here, but you can look at them to gaze upon the bodies of these athletes who swear they're at peak health and not at all deranged.