The next time you use one at a Waterfront concert, open the door slowly...

Let's face it, using a porta potty isn't the most private or fun way to use the bathroom, but when ya got go, ya gotta go. So naturally, this is a great place to pull a killer prank.

In this video from Improv Everywhere, unsuspecting concert goers at the Governors Ball Music Festival in New York City got a few nice surprises when they answered natures call, including a mariachi band.

Behold... "The Magical Porta Potty"

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