When I was around 11,me and my best friend at the time were bored outside his apartment building. For some reason, the best thing we could come up to do, was to throw rocks at each other.
Couple minutes go by, and I hit him in the elbow. He gets mad, and throws a perfect one straight above my left eye. If it was 5-6cm down, I would be wearing a pirate eye patch now. Anyway, his mum was a nurse, so we just run to his house in panic, because I was bleeding like crazy, and she took care of that. I dont even remember if I got stiches or not.
Typical dumb kids shit, but I wouldnt change it for anything, got a cool scar out of it.