Senior prank?

I need a senior prank that can be done fast will be less that 100 dollars and creates mass horror!!!...what kind of prank can I pull off

lol slip acid into a drink at prom?
I don't know that would cost money
um, be creative?
I wish I could help but I cant think of anything
tell me what happens though!

Please don't suggest dosing unknowing people with acid. that is so many levels of wrong. acid has long term effects. if you want to trip, that is your business. you can really mess up somebody's life. One bad drug experience can spit you out in a plethora of unpleasant experiences.

whatever prank you want to do, make sure it doesn't harm anyone. go buy 1000 bouncy balls and get creative. check out the dollar store and see what you can do with bulk amounts of rubber worms or something...

yeah I know, I was kidding
lol sorry it sounded serious, im not into heavy drugs like that

Buy as many boxes of lady bugs as you can afford with your $100, and let them go in the lunch room.

Keep in mind that any prank you pull, even if it isn't dangerous or illegal, could still get you in serious trouble.

I saw thiese guys on tv somewhere...they bought a shitload of condoms (dont buy them all at once or it would get suspisious) and the unwraped them soaked them in a liquid to make them sticky,mashed them up (to make them look used) and put them in random places throughout the school

I dont know about mass horror, but you could always create mass uneasiness, by putting gelatin (jell-o) in all the toilets, nobody can go to the bathroom. baby diaper crystals work too!