This hilarious April Fools' prank is taking the Internet by storm

This teacher's rule backfired in the most priceless way.
We all had those teachers in high school or college with a special sense of humor.

You know, the kind of teachers who would throw fake cockroaches at you if you had food out, or make you sit next to the class pet snake if you were acting out.

Well, this professor might be rethinking his rule about cell phones.

Some students at Aquinas College decided to have fun with the rule that all cell phone calls must be answered on speaker phone by setting up a very personal (and very fake) conversation. Their teacher totally bought it.

His reaction is even more entertaining than the prank itself. You have to love a teacher who can laugh at himself.

Watch the hilarity play out below:

Miss out on April Fools' this year? It's not too late to read about some of the Internet's funniest pranks of 2014.