What is your most embarrassing boner moment?

2 years ago, senior year, me and my ex-girlfriend (she was the pretty, popular girl so the whole school knew about us [I was new]) came back to class from recess. We were late. We'd found a place to chill in private and certain things ended up happening. When we got back in class all the girls looked in my direction. Turns out my erection still hadn't gone down. I heard them laugh silently while I went to sit down as they teased her playfully on the other side of the class. That wasn't even the most embarrassing thing that happened between us and the class that year💀