[just another ref]

Years ago in a boys jh game, there was a scramble for a loose ball and a kid slipped and fell on his back. It didn't appear to be a big deal. The ball bounced several feet away and my attention followed. A couple of seconds later I heard the kid on the floor scream, and looked around to see his coach running out on the floor. (no, we didn't T him up) When I looked back at the kid on the floor I saw a pool of blood spreading out from the back of his head. It turned out to be a rather innocent looking little cut, just happened to be in the right spot to bleed A LOT. As I recall, the kid said later that it didn't even hurt much, but he was, understandably, unnerved at the sight of that much of his own blood.