Amazingly I've not managed to give myself any bad injuries through my own stupidity yet, but I'm sure the time will come.
, your son sounds as accident-prone as my teenaged son, except that my son has never broken any bones or had a concussion. How the hell he's managed to escape serious injury is beyond me, because this is the child who's fallen out of tall trees and all sorts. My husband and I concluded when our son was not yet 2 that he has a granite skull and titanium bones. By rights he should have had several broken bones, at least three concussions, and a few dozen stitches by now, but he's never even been to A&E, though I have done several overnight concussion watches with him.
A few months ago a friend of mine tore her achilles tendon while doing the Gangam Style dance. She was stone-cold sober at the time. Needless to say her beloved friends will never, ever let her forget this.