Around the age of 12 I had a flywheel on an old Lauson/Tecumseh 2 stroker explode while I was tuning it at 4 grand.
Turns out that the pullers to remove those flywheels don't cause the cracks that the hammer did when I removed flywheel prior to this event.
The part that hit me caught my 1st knuckle on my right index finger, danced off my elbow and whized by my right ear.
The blood from my knuckle went everywhere, looked pretty cool to me at that age, blood was spurting from my knuckle.
Got several bad soldering iron burns, Wellers heat up FAST and those ancient huge wand-style ones cool VERY slow.
Got drunk once (1 of the very rare times) and tried to stop a fan blade on a home made cooling fan I had, that was another "knuckle-squirter", it wasn't as cool to see that many years later.
Had a battery blow up in my face once, bad connection on a damned Aspen, got out to fix it, forgot the ignition was on and just touched the cable end to re-tighten it and it went off.
Couldn't hear, couldn't see (liquid in my eyes), fortunately a farmer was on his way by when it happened, took me to the house and filled a 5 gallon bucket with water and I dunked my head in it, opened and closed my eyes several times and felt better.
My hearing returned 30 minutes later.
Strangely, I didn't suffer any burns and only had minor abrasions from plastic, my glasses kept me from losing my sight that day.
Yeah, I've done some stupid shti in my day, fortunately nothing that killed or maimed me seriously.
Mark.