Jimmy Fallon Is Totally Lost During 'Whisper Challenge' With Julia Louis-Dreyfus

Julia Louis-Dreyfus has experience with "low talkers" on "Seinfeld," but Jimmy Fallon just took things up a notch.

On Wednesday's "Tonight Show," Louis-Dreyfus and Fallon played "Whisper Challenge," which consists of one person wearing headphones and trying to guess what the other person is saying. The actress had a tough time figuring out the phrases Fallon was whispering. (In her defense, "sausage penis" is totally something people say, right?) However, Fallon wasn't even remotely close to Louis-Dreyfus' last phrase: "Wipe that smile off your face."

Something tells us he probably wouldn't understand that one even if he wasn't wearing headphones.

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

Jimmy Fallon