When I was in high school, we had one BC Calculus teacher for the entire school district. He'd visit each school round-robin and would teach the other schools v

When I was in high school, we had one BC Calculus teacher for the entire school district. He'd visit each school round-robin and would teach the other schools via video conference. Given that this was 20 years ago, we'd have streaming issues with some frequency. The solution was usually to reboot the streaming machine at the teacher's location. One day before class when the teacher wasn't at our school, one kid said, "when I cough three times, everyone freeze." About 20 mins into the lecture, he did just that and we all held our positions. The teacher noticed about ten second later, asked us a bunch of times if we could hear him, and then, with exasperation, said, "well looks like they froze up again..." We had a good laugh for the two mins or so we were down and then continued on. I don't think anyone ever blabbed that we had faked it just for kicks.