Well, mine aren't nearly as bad as some of y'all's, but here goes.
Once, when i was about 7, I was using my dad's Old Timer to cut a notch in an arrow, with his supervision. Since I was doing alright, he went inside for a minute to get something, and while he was gone, I managed to cut the back of my hand pretty good. I was holding the arrow upright in my left hand, braced against the porch deck, and cutting
down with my right hand to notch out the arrow. I got a pretty good cut at the base of my thumb, on the back of my hand.
Skip ahead to when I was 12. It was Thanksgiving, and I was sitting out on the very same front porch, with my SAK I got just earlier that year, whittling a knife out of a piece of wood. I was using the double-cut saw blade to make a tough cut, and it slipped, and cut my left index finger in the area between the first and second knuckles. A nice, half-or-three-quarter-inch long cut, maybe an eight of an inch deep, and jagged. Bled like nobody's business and left a nasty (cool) scar. And just earlier that day, my brother had had to take my uncle to the E.R. from our house, because he had a small stroke.
I have never been to the E.R. because of my knives, and I hope never to get a cut serious enough to have to, though I'm sure I will.
Oh, and just the other night, I was sitting here at the computer playing with a folding knife with my left hand and looking at the screen, and closed it right up on the back of my thumb. Bled quite a bit for such a small cut.
Kyp