We (as an entire class) Used to Synchronize Our Watches and Drop Books on the Floor at precisely 2:07 pm...

...but this is so much better. When I was in high school, an incident like this would have had all the elements to have made my day.  Better than a fire drill for disrupting classes and funny as hell:

A Japanese man was arrested for trespassing this week after turning up at a high school dressed in a girl's uniform and a long wig, local police said.

Thirty-nine-year-old Tetsunori Nanpei told police he had bought the uniform over the Internet and put it on to take a stroll near the school in Saitama, north of Tokyo, on Wednesday, the daily Asahi Shimbun said.

When students standing outside the gates started to scream at the sight of him, he dashed inside the school grounds, hoping to blend in with the crowds of teenagers, the paper said.

They also screamed, forcing the man to flee, losing his wig in the process. A school clerk pursued him and stopped him at a nearby riverbank, the paper said.