Armed with a fart machine and zero shame, I hit the streets 💨😎 The reactions? Shock, disgust… and way too much laughter. You’ll never look at elevators the same again. #FartMachinePrank #FunnyPublic ...

The fart machine teaches children that a fart’s noise depends on the pressure of the anus when letting out the air, Hartmann said. Children took turns laughing as they tried making the loudest ...