I feel off of a counter when I was little and cracked my head on the edge of the island counter in the kitchen. It was pretty nasty from what I understand.
Also I was playing basketball on an indoor court after walking through a bunch of snow, and I tried to stop abruptly. The front of my foot stopped, but the back kept going and twisted around until it snapped both the bones in my left leg. Pretty sissy way to break your leg, I know, but holy hell that was not fun. Side note: The X-rays were more painful than breaking the leg. They tried to get me to turn my leg to the left and right, and when your leg is broken, that tends to sting a bit. Then the f'd up the developing process and had to do it all over again. Ugh.