I've heard of more than I've pulled off, alas.

My friends who went to school at Cornell U. in the 1950's tell these 2 tales:

1. One guy in the dorm would go out drinking on Friday nights. They always told him, "one day you're going to be so drunk you won't be able to find your room." He laughed at them. So one Friday, just as he left, the whole dorm got into gear. they took his door off the hinges, removed the frame, put studs in the doorway, sheetrocked the studs, taped and mudded the joints, and painted the whole wall. He spent the night in the elevator.

2. The announcements were read from the school radio station studio. They created a tape recording that sounded like announcements at the beginning, then got into the sexual escapades of the dean and other famous on-campus personnel. They started it running, and melted wax into the doorlock.

This from the University of Washington, my alma mater:

3. The guy who was always playing his stereo loud in the wee hours was served his turn when the next-door neighbors wired his speakers to their stereo, and sometime in the middle of the night, played the Star Spangled Banner at full volume. After fiddling furiously with the controls to his stereo, which of course did nothing, he ended up throwing his "bewitched" speakers out the window.

-Alex