I broke my left collarbone in 2nd grade whilst horsing around in school. Well, thats why the teacher warned us not to horse around.
Crushed my left middle finger on a canoeing trip in high school (canoe swamped, squished finger trying to unwedge canoe from rocks).
During my military career, I've managed, on separate occasions, to break another seven fingers, mostly from having aircraft parts dropped on them. Bad luck, mostly (I wear gloves to lift heavy parts because my hands sweat easily, making them slippery).
Broke 3 ribs playing tag with my son (tripped in grass pothole I couldn't see). That one hurt. Since it occurred 3 days before a deployment to Saudi, I kept it quiet until about 2 weeks after I got there. Dumb move, but fortunately they were clean breaks. Sometimes, fortune favors the moronic
That's about it.