I would consider myself pretty lucky with injuries, couple of broken arms, sprained ankle, few stitches is about all I've gotten.
However when I was 7 I got a slap of a hurley just above the eye and between the pain and shock of all the blood on my T-shirt it was horrendous. Even the stitches being put in was so painful, I'll never forget it. The scar it left isn't even that cool

So AH'ers, whats the worst injury you ever had?
STD's or a cramp in your gooch do not count!