I bought lots of school brownies and shaped them into a huge turd, then place them in the toilets.
We bought chocolate milk in the cafeteria and mixed them with all sorts of stuff, then spill them all over the bathroom sink making it look like someone was had a vomit attack.
We made fun of the mustard boy at school, he also packed whole watermelons in his backpack.
Started food fights.
Placed false love notes into girls lockers.
A classmate during PE stuff himself, he had diarrhea running down his leg.
While all the teachers were out a kid who had down syndrome stuff himself, then saw that as an opportunity to throw stuff at us.