Once when I sliced my thumb open really badly. I was home alone, cutting a piece of ice cream cake, believe it or not. I should have waited a little longer for it to soften up, or run the knife under hotter water.... Anyway, I put so much pressure behind cutting it, that as the knife got through the center of the cake, it basically just shot out and went right through the side of my thumb/hand. I'm really bad with loads of blood - worse when it's my own - and I immediately hit the floor when I saw it. I'm still not sure how long I was out for.
called my friend who is a nurse (since my bf was at work and at the time we only had one car), explained the whole thing to her and she told me what to do to patch myself up. Thankfully, for as bad as it was, I didn't need stitches!
then, I almost passed out last year when I broke the heel of my foot. I'd slipped in the rain, in flip flops coming out of the house and the door slammed shut on my foot. My bf got me back upstairs to our apartment and put my foot up on the couch to check it, but the pain was so excruciating that I almost passed out.