Jimmy Fallon and Brad Pitt Yodel Atop NYC Rooftops (Video)

The duo engage in a "conversation" high above the city about "World War Z" before Pitt challenges Fallon to something that's "never been done before."
Jimmy Fallon, left, and Brad Pitt

Jimmy Fallon and Brad Pitt, yodelers?

NBC's late-night host engaged in a yodeling conversation with the very game World War Z star from two rooftops in New York in a clip that aired during Tuesday night's Late Night With Jimmy Fallon.

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The conversation consisted of some small talk -- "Jimmy? What are you doing up there?" "Yodeling … you?" "Same" -- before Fallon congratulated Pitt on World War Z. (All of the "conversation" was in subtitles.)

Pitt then came up with a "crazy idea."

"You wanna try a double yodel?" he asked.

Fallon's reply? "A double yodel? But that's never been done before!"

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But the two stars proved up to the challenge. Watch what happens in the video below.

World War Z hits theaters June 21. Late Night airs at 12:35 weeknights on NBC.