Here's a painful activity you should never take part in: The SHIN-KICKING championships just got underway in southwestern England. You can check out tons of footage from it on Deadspin.com

First, participants stuff their socks with hay so there's at least SOME padding. Then it's basically like Olympic-style wrestling...except you're allowed to kick each other in the shins. By the way, they actually try to convince you that it's a real, legitimate sport.