most embarrassing thing you've done

What was the most embarrassing thing you have ever done in your lifetime. Here's mine- when I was in pre k through 1st (can't really remember either way I was young) we were on a bus trip or somethings similar and I pulled down my pants and mooned everyone. Idk what the fuck I was thinking but I mooned a bunch of parents plus other kids. I still go to school with some of the kids today but hopefully no one remembers. What's your most embarrassing thing you've done?