I was hiking one day with the outing club at college and went to jump across this stream, initially lauching myself off a tree root. Next thing I know, I hear a snap and I'm on my ass. I figure the tree root snapped when I stepped on it. No big deal, I think. Then when I try to get back up, it seems that I can't weight my right foot. Gee, wonder why? Then slowly the pain comes on. Turns out it was my ankle that snapped, not the tree root. Ouch!
On the bright side, I got carried out of the woods by these 3 really cute guys.