Brad Pitt And Jimmy Fallon Yodelling To Each Other Is Very Silly, Very Funny (VIDEO)

Brad Pitt was in New York this week for the premiere of his new zombie movie 'World War Z'.

But before he left the Big Apple, he went up to its rooftops... and indulged in a little yodelling with Jimmy Fallon. In fact, he challenges the talk show host to "try something that's never been done before".

Click play to watch the delightful silliness unfold, courtesy of 'Late Night With Jimmy Fallon'.