I haven't done anything, but my sister's class did. This was back in elementary school.
Okay, so there was this sub that everyone hated. She was the type of person who's old and hates kids, yet is a sub for an elementary school. So, one day, my sister's class decided to pull some pranks on her. They poured soapy water all over the counter and put water on her chair. Obviously when she sat down, she got wet and the class burst out laughing. The best part thought, was when she leaned on the counter and smashed her side. She never taught that class again.
I'd like to say that what my sister's class did was mean, but I can't say that. It was perfectly justified; that sub was a terrible person.








