Better yet, flood the bathrooms, and put soap on the floor (in the halls)to make it slick...Well wait no, that could be real dangerous...

I know, give ex-lax to all your best friends.

Already done it, but they got really pissed and put flour in my room.

I was thinking of taking off all of the license plates of the teachers during school, and watch em flip out when they realize all their shit is gone, I'd probably put them in a bag and plant them in a teachers room , she'd get fired, bahaha