A bunch of kids last year moved some teacher's car from the rear "teacher" lot to the front "student" lot, and switched it with some junior's car.
The best part was they though the junior was in on the prank, since his car was in the teacher's spot. (The name of the kid was on the parking tag)
Oh, and as for how to do this one, you'll probably need your entire class to pitch in. The group of guys that did it numbered in the thirties, since they all lifted it.
Another common "annoyance" is all the seniors will ride bikes, atvs, etc throughout the school before school starts. Some even went as far as to stay outside when the bell rang, then yelled "Senior Skip Day!!!!" and rode off to some fast food restraunt. The best part was someone brought a tractor in and rode that. Yes, a full-fledged farm tractor. It was freaking hilarious, because it would only go 30mph, and the road in front of our school is VERY, VERY busy.
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