well, most of the injuries that i have acquired could have been avoided with a modicum of common sense, but the most impressive would definitely be when i ran partway through a large thorn bush. I was playing capture the flag, and i got cornered, with only several meters of spiky bush between me and the flag, i made a dumb choice, and sprinted at the bush, made it most of 3 and a half metres through the bush before i ran out of momentum. At that point, I was unable to bring myself to continue draggin the thorns through my legs, and waited for the opposing team to go capture me. it did make me feel good to se how long it took them to get through the bush though. the bleeding legs, not so much.
TL;DR: I'm a dumbass