It's Hysterical to Watch Helen Mirren Get Interviewed While on Helium

Helen Mirren's British accent sounded quite different when she stopped by The Tonight Show on Monday. During the interview, Helen and Jimmy Fallon inhaled helium out of balloons, and when she started talking, Jimmy couldn't help but crack up. This isn't the first time he's gone the helium route with a guest, either; last year, Jimmy interviewed Morgan Freeman on helium, and hearing Morgan's voice sent Jimmy into a giggle fit. Watch the hilarious interview with Helen Mirren below, and then check out more viral videos, including Ariana Grande's spot-on Celine Dion impression.