Watch what happens when playful scamp Justin Bieber meets master prankster Ellen Degeneres. It's total insanity as Bieber pranks person after person in the potty. Can you imagine just trying to answer mother nature's call and being surprised by one of the world's most famous pop stars? I can. And it's terrifying!
This article originally appeared on Cosmopolitan.com. Minor edits have been made by the Cosmo.ph editors.