I used to work at a grocery store in a very small town. The late shift was just me and one other person. 11:30 pm on a Tuesday in a small town of less than 700 people, right? Nothing going on, there hadn't been any customers for hours. My coworker was amusing himself by throwing pencils against the ceiling and catching them as they bounced back down.

11:36pm, we get a phone call. It's someone claiming to be from "corporate surveillance" who asks us to stop throwing pencils against the ceiling. I never felt comfortable at that job again.