What is the stupidest way you have permanently injured yourself?

First one: I was in fifth or sixth grade, hanging out with some neighborhood kids at this creek that ran through our neighborhood. The creek runs under the road, so there were 3 short but tall tunnels going under it, only one had water and the other two were just sandy. It was summertime, getting close to fourth of July, so we wanted to burn some shit because y'know, fire is awesome. So we gathered up some trash, dry leaves, and other detritus, someone snagged some matches, and we lit up our badass little trash fire in one of the sandy tunnels. We were standing around it when after a few minutes, POP! Something in the fire exploded. I was confused because nobody had thrown in any fireworks, then felt funny feeling on my arm and looked down to find a 2-inch section of skin on the underside of my wrist split open pretty deep, but not bleeding. Freaked out, ran home and lied to my dad (said I slipped and fell into broken glass) and we went to the ER to get stitches. Learned later someone had thrown a glass bottle with the cap screwed on into the fire. Crazy that half an inch toward the middle and it would've cut one of big suicide veins, and one of the other kids was holding a basketball in front of his stomach which was also sliced open from another flying glass shard.

Second one: A few years ago on vacation, 5 of us were sharing a golf cart. We were struggling to get up a hill, so I thought it would be fun to hop off and land running and push the cart to give us a boost. Turns out we were still going faster than I could run in my sandals and I was promptly dragged a little ways before the cart stopped. My effort was rewarded with a bloody patch on the top of my foot that had been frictioned off against the asphalt (thanks sandals). Still have a discolored mark from it.

/r/AskReddit Thread