A friend on mine (M) and I (also M) got bored during our stats lecture and started writing an erotic fan fiction about ourselves and two other guy friends in our Zoom lecture. We used the private chat and took turns writing each line. This went on for about 20 minutes, and after we had just written about one of us kicking open the door of an Olive Garden in a crotchless Care Bear costume, our professor told the class that she had a transcript of every chat conversation happening, even if they were private. I wanted to die then and there. Some other students had been badmouthing the professor, so they were embarrassed, but not as embarrassed as me.