ONE : I think I was 12 or 13. I had a Huffy Monoshock bike which, if you're unfamiliar with the
Huffy Monoshock, it "looked" like a BMX bike but it was to cool BMX bikes pretty much what the AMC Pacer was to sports cars, fat, slow and stupid. And, unfortunately, when you're 12 or 13 years old, if it's YOUR bike then it's the BEST bike on the planet. . . except it wasn't. Anyway, all my buddies have their cool BMX bikes out or they had modified their bikes for jumping ramps and they've got a ramp set up to do some "sweet jumps." Never mind the fact that I'm a good 50lbs heavier than the rest of them AND I've got a pig of a bike with a flat seat that slopes backwards, ooof.
So, I build up speed, I hit the ramp and I almost instantly go face down just as soon as I exit the ramp except I hit knee first, I have a huge gash in my knee, big flap of thick skin hanging off and I wobble (in complete humiliation and defeat) into the house with blood streaming down my leg. I can still hear the howling of laughter to this day in the background and I'm pretty sure 3 or 4 of the guys were literally rolling on the ground in delight. It was a pretty nasty wound, lots of blood, complete with rocks embedded in it from the gravel and to this day I not only have a scar from it but I have no feeling in that 50 cent piece sized scar on top of my knee. So, I hunt down my Mom and, well to paint the complete picture, I'm #5 of 5 children, the last one, the baby. If you look at the family photo album, there's one million photos of my older siblings and I think 6 of me.

Anyway, my Mom takes a look at it and says "yeah, listen honey I'm running late for work (she was a nurse working the late shift) put some rubbing alcohol on it, keep it elevated and use one of those big bandaids on it from the medicine cabinet. I love you, I'll see you when I get home from work, don't fight with your brother and don't wake up your Dad. . . okay. . . and keep that cleaned out, you don't want to get it infected." Man I got crap about that jump fail all the way into high school. "Remember that time you flipped that stupid Huffy Monoshock you had? That was awesome. . . do you still have that bike?"