1. Park cars in front of the entrances to our school, so that nobody can get in. 2. While the secretary is busy dealing with the cars, change the master time clock (the clock that keeps the building clocks on the right time) to some wierd hour. 3. Attach a laptop to the building's PA system to play random things over the PA system throughout the day. 4. Have the same laptop randomly re-program when the bell goes off.