
Originally Posted by
Sherlock Holmes
The last night that you're there, take a few skeins of yarn, and a pair of scissors -- Cut lengths that stretch about from one side of the hall to the other, doorknob to doorknob, with about 6 inches extra on either end. Tie each length of yarn in a double knot around the handle of the doorway opposite. If doors are staggered, do the same in a diagonal pattern (neatly!), as you would lace a pair of sneakers. When the occupants awaken in the morning, either getting ready to leave for home or to do mundane morning rituals, they will not be able to leave their rooms. (They can use their cellphones to call for help.)
While they're all struggling, walk out to the front of the building (where at least a few people will see you -- put on some loud music or something to get their attention or yell). Once you've got a few confused faces at their windows, flip them all off, wave/blow them a kiss, and walk out like a boss.