My father loved to tell me this story when I was younger..
He went to highschool in California, and they had an open "outdoors" campus. Basically, each classroom was in a seperate building or trailer, including the administrations office.
The administration office has a recessed entry door, and brick walls. So, during the last week of school, him, his brother (my uncle), and a few friends loaded up the back of a ranchero with bricks and mortar. At 2am on a friday night, they drove onto the school campus and proceeded to brick over the entrance to the administration offices.
Come monday morning, the bricks were set. As were the teachers and principal, and AP's. Nicely settled outside the administration office, wondering how the hell they were going to get in. Apparently, at the end of the workday, each teacher locks his or her classroom, then returns their keys to the office. So, all the classrooms are locked tight, and the keys are behind a locked cabinet, behind a locked door, behind a fresh brick wall.
A few hours later, some one managed to get a few sledgehammers from home and proceeded to knock a big enough hole through the wall to get into the office, and have the schoolday officially start.
