It may be a week late, but this is probably the best April fools' prank we've seen this year.

The video was shot in a classroom at Aquinas College in Grand Rapids, Mich.

This macroeconomics professor has one rule in his class: If your cell phone rings, you have to answer it on speaker phone and deal with the embarrassment.

This girl used the professor's rule to her advantage and did so brilliantly.

Source: Free Beer & Hot Wings