Dumbest or most embarrassing thing you’ve ever done?

Hitched a ride on the back of a train. (A. I didn't realize the ladder at the back was on the wrong side B. the train accelerated faster than expected. C. The soft sand landing was on the other side. (Rocks and 2inch thorns do not make for a soft landing)) My pants tore open, and I think I actually did kiss my ass before I stopped rolling.
For some reason my neck would not support the weight of head at all. Luckily I hurt too bad for it to be broken. My bag was ripped too, some of the first aid gear I had in there remained. So, I pulled out the thorns and bandaided most of the wounds. I was still a bloody mess. So I walked back home, and got stuck with library fines for not returning the books I was taking that day... One of the dumbest things I have ever done

I have sooo many embarrassing moments I really have no idea lol!