08/01/2014 09:20 am ET Updated Aug 01, 2014

Jimmy Fallon Can't Keep It Together Playing 'Face Balls' With Julia Roberts

Jimmy Fallon really knows how to make an impression.

On Thursday, July 31, Fallon welcomed Julia Roberts to the "Tonight Show" by playing "Face Balls," a new game where competitors take turns pelting each other in the face with clear, inflatable balls.

It sounds like it could get out of hand pretty quickly, but don't worry. It was super hilarious, and Roberts still makes it out a "Pretty Woman."

"The Tonight Show Starring Jimmy Fallon" airs weeknights at 11:35 p.m. ET on NBC.