When I was really little, my uncle was pulling me behind a motorcycle on one of those plastic kids sleds and I rolled off face first into a pine tree.
Or maybe it was a couple years later when I got in a fight in line to go to the library and a kid grabbed the back of my head and smashed my temple onto the corner of a Formica countertop.
Or it could be when I caught the biggest guy in my Army unit jerking it and couldn’t keep my mouth shut and he did his level best to break my jaw. He must’ve had 6" and 100 lbs on me. Fortunately my head got in the way and I had to get stitches in my forehead from the punch and in the back of my head from the doorway he knocked my head into.
There were some other contenders, but those three all involved stitches and none of the others did.