GRAND RAPIDS (WZZM) - A Grand Rapids college professor is now the star of a viral video after his students got him with an April Fool's Day prank.

According to the school, professor Steve Barrows has a class rule that if a student's cell phone rings during class, the call must be completed on speaker phone, so that all the class can hear and, presumably, embarrass the student. However, a couple of students were able to turn that around on him on April 1.

The YouTube video has over 4 million views as of April 7.

Watch the prank below.

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