As a college student, I can tell you first hand that professors absolutely hate cell phones. Most of the time they just tell you to put the phone up, but others aren't as nice.

Apparently, the teacher in this video has a rule that if your cell phone goes off in class, you have to answer it on speakerphone, in front of the entire class. Can you say embarrassing?

One of his students managed to take advantage of his silly little rules though, setting up a fake phone call on April Fools’ Day that leaves the teacher reconsidering his own policy. Check out the video above.