I suspect that many guys on this thread were but a tiny spark away from a burn ward........

When the big plastic trash bags appeared they were perfect for balloons. No, not your regular balloons.....Exploding balloons!!! Turn off the pilot light on your friend's gas stove and hold the bag over an unlit burner til it fills up. Being a bit lighter than air now, you seal up the bottom tightly after leaving about a foot of green fuse hanging out. Take the sucker outside (kinda' hard getting them through the doors and parents will ask about the funny gas smell if it rips), light the fuse, let it go. At this point, I advise knowing the wind direction because these things don't get up real high and being chased by an about-to-explode balloon is no laughing matter. Anyway, when all goes well, your balloon should make it 100 or so feet up and go BOOM with a nice little fireball and a melted bag descending.

Here's a fun one. Come up with some reason to have your friend Cary bring the school welding shop's acetylene/oxy tanks to the gym. This is relatively easy if you are building a set for a play. Arrange for the two of you to get into the gym at halftime along with the football teams. Very easy if you have a third partner named Gary on the team. When the hallway clears and both teams are in the locker rooms, quickly lay a bead down the opposing team's door.....If you are well prepared, this will take less than 3 minutes. When questioned, lie, deny, and make counter allegations. Serve the three day suspension which is all they can do since they aren't positive it was you.

When I was a freshman at Berea, the dorm had all tile floors so a popular pastime was to take a can of lighter fluid and write something in front of someone's door, light it, and step into another room. When they opened the door, there was a nice flaming "fuck you" or "shit" or "dumbass." This was really popular in front of the door of one particular jackwad who was a real ass. The practice stopped when he tried to get even. He thought the two guys next door were doing it so he emptied his can of lighter fluid under their door and lit it. This set the closet curtains on fire and had the two guys inside ready to go out the third story window! Fortunately a group of us managed to get the fire out without calling the FD, but that put an end to this little novelty and the jackwad's college career at Berea as well. I suppose I should have felt badly about that, but like I said, he was an ass.

Spaw