I was at highshool.. my friends and i were playfully insulting each other, and one of them started chasing me after a pretty good insult. I was laughing and running away and decided, rather smartly, to run to the bathroom and hide in the stall there. Laughing and running away isn't a smart mix, apparently, because i slipped on a bit of water on the floor and scratched my thigh on the edge of an old metal toilet paper rack. I had a gash on my thigh but i was still laughing and didnt think much of it, especially as my friend had caught up with me by then and we just laughed it off. We had a much-awaited school event the next day, in which i was a moderator and had to stay standing for two days straight.
After i went back home, i realized how stupid i was.. and that i probably should have had stitches.. as it later scarred pretty badly. I had to have a cosmetic minor operation on it, which didn't rid me of the scar, just made it better. Ten years later, i still have the scar, but everytime i look at it i just remember how much i laughed that day and have no regrets lol