I dont know if this is mean or just funny, I really cant think of anything mean i have really done right now, so here it goes
8th grade we were in the lunch room and a friend and i decided to take an empty cup and fill it with mustard and ketchup, when lunch was over we went to the 3rd floor back to class...
when our lunch was over the 7th graders would start theirs, so from the top of the 3rd floor if you looked down you could see them waiting in line to go to lunch....
So i took the cup and whipped it down on top of them, all we could hear was them yelling.