I'm a school bus driver and one of my coworkers has a funny story like this. She finished her run one afternoon and then parked the bus in its spot in the bus yard. When she walked to the back of the bus to deactivate the "no child left behind" alarm (the horn starts blaring if you stop the bus and open the door before hitting this switch in the back) a kid popped up from behind a seat and yelled "boo". The driver asked the kid what she was doing still on the bus and the kid said she "just wanted to see where the buses sleep at night".