Billy Crystal And Jimmy Fallon Team Up For Another Hilarious Lip Flip

To promote his book, "Still Foolin' 'Em," Billy Crystal got together with Jimmy Fallon for another hilarious lip flip.

Crystal was actually the original celeb Fallon swapped lips with when he was on "Late Night." Since that time, the host has done the sketch with celebs like Whoopi Goldberg and Tina Fey, but it's definitely hard to beat the original (especially when it involves an attempt to joke about Orlando Bloom and Justin Bieber in Dutch).

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