London-based prankster and magician Julius Dein took to the street to gently humiliate random people with a simple yet very effective prank. With a little mind manipulation, Dein got Londoners to repeatedly yell "I am a penis!!" in a way that's guaranteed to make your inner school-child giggle. Sure, roll your eyes and say it is immature, but don't act like you're not going to try this on your friends and family later.
The only thing funnier than someone in a crowded street yelling that they are male genitalia is their face the moment they realize what they're saying.