In our residence the lounge door can be locked (or unlocked) by any room
key from the floor. You can also remove the handles from a door (ie the lock
comes too) and switch the handles.
We did this to one guy, he was the only one who could lock the door to the
lounge (we never locked anyway) but everyone could get into his room.
Every night for a week (at about 3:30 am) someone would go in and do something
to him while he was asleep (nothing really nasty). As he was a sound sleeper, it
actually took him a week to figure out what was going on.
Disclaimer: Kids at home, Don't try this.
Related:
W H Y C O P S H A T E Y O U <<<<&l <
-if you have to ask get out of the way-
Have you ever been stopped by a traffic cop and, while he was
writing a ticket or giving you a warning, you got the feeling that
he would just love to yank you out of the car, right through the
window, and smash your face into the front fender?...