I've not had any good ones myself, apart from the usually nasty falls off my bike and assorted other minor bumps and scrapes. I've never broken a bone that I'm aware of.
My brother-in-law however has some great stories... my favourite is that when he was in junior school, he got bored and tried sticking his little finger through each of the increasingly smaller holes in one of those plastic stencil sheets.
Inevitably he got it stuck.. and asked a friend to pull it off.
His friend pulled, and they thought they'd succeeded.. until they noticed that his finger was still in the stencil ( the skin anyway
).
He put the skin back on his finger .. and said to the teacher "I think I need to go to hospital".. she said ( assuming that he was messing about ) "oh really, and whats the matter?" .. he then proceeded to slide the skin on his finger up and down a few times for maximum effect.
The sight of this was obviously too much and she passed out.
Attached is the aftermath of a nasty accident.. I think the car used to be an A3.. I've no idea if the occupants survived or not.