All three of mine hold a common theme...they all involve some sort of sport, and all involve rampant stupidity on my part.
1.
Soccer, (football 
) 7 years ago. Playing keeper, I came out really aggressively on a corner and plowed through a defender and a striker in an attempt to punch the ball out. Problem is, the striker was at the time winding up for a high volley strike. He got a yellow card. I got 2 bruised ribs and the wind knocked out of me to the point of temporary blackout.
2.
Alpine ski racing, 3 years ago. (slalom) I'm on my friends skis, which are some incredible vokl's with a tiny turn radius. Problem is, hes a good 6 inches shorter than me...which means his skis are tiny. (155, if I recall) I'm tearing this slalom course a new one at Whiteface, until my weight starts shifting back. Instead of being smart and slowing down to get my weight safely forward again, I decide to "ride it out" by taking an even more aggressive line with the weight back. 3 seconds later, I'm airborne facing directly skyward. 4 seconds later, I'm in an orange fence flipping uncontrollably. 5 seconds later, I'm face-down in the snow, bleeding from my face. Took me off skis for the rest of the season.
3.
Quasi skateboard racing-ish, 13 years ago. This one takes the cake. I grew up on a residential street with very little traffic, but at the top of a large hill. Therefore, my neighbors and I used to do all sorts of races and such down it. So at one point, we invented this strange activity which involved taking a skateboard, and riding on your knees on it. You could actually turn these ghetto-luge contraptions quite well, with a good grip on both sides of the board. So one day, we set up an awesome race course with chalk, and start burning down the hill following this course. Only problem is, our course planning was not particularly well thought out, (we being 10 years old, after all) and there was a poorly placed tight left turn. Well, I didn't make that turn, and my skateboard went over a sewage grate. The only way to describe the kind I'm talking about here is a metal grid of crisscrossing bars, spaced a few inches apart.
The wheels of the skateboard dropped into these gaps, and it promptly stopped. Inertia being what it is, I promptly continued forward, face planting violently into said storm drain. One broken nose and one missing permanent tooth later, (along with god knows how much facial bleeding) I was in the hospital. To this day, I have an odd number of teeth...but my braces later closed the gap.
The best part of this was watching my mom go out a couple days later with the vacuum cleaner, trying to fish my tooth out of the drain.
