A couple of years ago, there was this trainer who came to the barn that I now board at. Then I was just excersising horses for people, and once the trainer decided that I was a good enough rider for him, he would pick horses out for me to ride. Most of the time they were safe, and I never fell of any of them. This horse gave me a run for my money.
One day, I came to the barn and he had a 5 year old gelding out, already tacked up. He told me to hurry up and grab a helmet, and that I was riding this horse. I ran back to the barn, grabbed my helmet and chaps and got on.
The gelding and I walked about halfway around the ring when one of the huge biting flys landed on him. He flipped out and took off bucking like a freaking rodeo horse. I managed to stay on for about 3 bucks, and then flipped over his shoulder, landing flat on my back and directly below his feet. He bucked again, and his left front foot missed my forehead by 2 inches. The only thing I remember about that fall was the view of his hoof coming down nearly directly for my head, I don't even recall any pain.
Once he stopped bucking, I caught him, remounted and finished out the ride, he was fantastic after that. Everyone was shocked that I got back up, I was only 14 at the time. I've always been the kind of kid that gets up on anything and is to stubborn to be afraid of anything (other than my best friend's demon Arabian mares xD).
Another bad one was on my horse. I was riding him to tire him about before a trail ride, and I decided to jump a line of jumps.
They were little, only about two feet, maybe a little over. We cantered up to the first one, and he took off perfectly, but as he was taking off, my right stirrup fell off the saddle. I don't think it was attached properly, and now I check it before every ride xD.
Its ridiculously startling to all of a sudden not have anything to support half of your weight as you're jumping, so I came off while he was going over the jump. Somehow I managed to hit my kneecap on the jump (which was a good solid jump), and I must've slid about 6 or 7 feet from where I actually landed.
He's such a good boy, though, and he made a valiant effort to not step on me, and came to a halt as soon as he could. He turned around and looked at me like I was an idiot, though
I had sooo much dirt and sand down my breeches and shirt. It was disgusting, and my knee was all busted open and bleeding. Before I even cleaned my knee up, I fixed my stirrup and jumped the line again, and this time it was perfect xD And I still made it on the trail ride!
I make it a point to get right back up, no matter what has happened to me, the one time I didn't, I didn't ride for about half a year and I was miserable.