I havent really ever injured myself. I busted my knuckle on my left pointer finger - it was bad enough to change the way i hold pencils when i write, lol. Took an elbow to my mouth once, lost a bit of blood but that was it.
Otherwise I spose I could count these two:
Calcium build up in my left knee had to be cut out. Did that sometime when landing on my knee.
Dead hairs built under the skin of my ass, that had to be cut out as well - got that same way, took a bump on my ass somewhere along the line that started that.
And now, even though this isnt really due to a bump, im getting a benign tumor thing cut out of my left knee, which i think is located behind my patella.
Nothing too flash, though - no broken bones.
Sorry for continuing bumping...