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'.

(Via Tastefully Offensive)

Also on HuffPost:

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  • World War Z - World Premiere - Red Carpet Arrivals

    LONDON, ENGLAND - JUNE 02: Angelina Jolie attends the World Premiere of 'World War Z' at The Empire Cinema on June 2, 2013 in London, England. (Photo by Tim P. Whitby/Getty Images)

  • World War Z - World Premiere - Inside Arrivals

    LONDON, ENGLAND - JUNE 02: Angelina Jolie attends the World Premiere of 'World War Z' at The Empire Cinema on June 2, 2013 in London, England. (Photo by Stuart C. Wilson/Getty Images for Paramount Pictures International)

  • World War Z Premiere - London

    Angelina Jolie and Brad Pitt arriving for the world premiere of World War Z, at the Empire Leicester Square, London.

  • World War Z Premiere - London

    Angelina Jolie and Brad Pitt arriving for the world premiere of World War Z, at the Empire Leicester Square, London.

  • World War Z Premiere - London

    Angelina Jolie and Brad Pitt arriving for the world premiere of World War Z, at the Empire Leicester Square, London.

  • World War Z premiere - London

    Angelina Jolie and Brad Pitt arriving for the world premiere of World War Z, at the Empire Leicester Square, London.

  • World War Z premiere - London

    Angelina Jolie arriving for the world premiere of World War Z, at the Empire Leicester Square, London.

  • World War Z premiere - London

    Angelina Jolie arriving for the world premiere of World War Z, at the Empire Leicester Square, London.

  • World War Z - World Premiere - Inside Arrivals

    LONDON, ENGLAND - JUNE 02: Brad Pitt attends the World Premiere of 'World War Z' at The Empire Cinema on June 2, 2013 in London, England. (Photo by Stuart C. Wilson/Getty Images for Paramount Pictures International)

  • World War Z - World Premiere - Inside Arrivals

    LONDON, ENGLAND - JUNE 02: Angelina Jolie and Brad Pitt attend the World Premiere of 'World War Z' at The Empire Cinema on June 2, 2013 in London, England. (Photo by Stuart C. Wilson/Getty Images for Paramount Pictures International)

  • World War Z - World Premiere - Inside Arrivals

    LONDON, ENGLAND - JUNE 02: Angelina Jolie attends the World Premiere of 'World War Z' at The Empire Cinema on June 2, 2013 in London, England. (Photo by Stuart C. Wilson/Getty Images for Paramount Pictures International)

  • World War Z Premiere - London

    Kimberly Wyatt arriving for the World premiere of World War Z, at the Empire Leicester Square, London.

  • World War Z Premiere - London

    Kimberly Wyatt arriving for the World premiere of World War Z, at the Empire Leicester Square, London.

  • World War Z Premiere - London

    (Left to Right) Ryan Fletcher, Adam Pitts, Joel Peats and Andy Brown of Lawson arriving for the World premiere of World War Z, at the Empire Leicester Square, London.

  • World War Z Premiere - London

    Mireille Enos arriving for the World premiere of World War Z, at the Empire Leicester Square, London.

  • World War Z Premiere - London

    Mireille Enos and Brad Pitt arriving for the World premiere of World War Z, at the Empire Leicester Square, London.

  • Brad Pitt, Daniella Kertesz, Mireille Enos, Marc Foster

    From left, Brad Pitt, Daniella Kertesz, Mireille Enos and Marc Forster arrive at the World Premiere of 'World War Z' at the Empire Cinema in London on Sunday June 2nd, 2013. (Photo by Jon Furniss/Invision/AP Images)

  • Daniella Kertesz, Mireille Enos

    Daniella Kertesz, left, and Mireille Enos arrive at the World Premiere of 'World War Z' at the Empire Cinema in London on Sunday June 2nd, 2013. (Photo by Jon Furniss/Invision/AP Images)

  • World War Z Premiere - London

    Angelina Jolie arriving for the world premiere of World War Z, at the Empire Leicester Square, London.

  • World War Z Premiere - London

    Angelina Jolie and Brad Pitt arriving for the world premiere of World War Z, at the Empire Leicester Square, London.

  • World War Z Premiere - London

    Angelina Jolie and Brad Pitt arriving for the world premiere of World War Z, at the Empire Leicester Square, London.

  • World War Z premiere - London

    Brad Pitt arriving for the world premiere of World War Z, at the Empire Leicester Square, London.

  • World War Z premiere - London

    Muse Dominic Howard, Matt Bellamy and Christopher Wolstenholme arriving for the world premiere of World War Z, at the Empire Leicester Square, London.

  • World War Z premiere - London

    Brad Pitt arriving for the world premiere of World War Z, at the Empire Leicester Square, London.

  • World War Z premiere - London

    Angelina Jolie arriving for the world premiere of World War Z, at the Empire Leicester Square, London.

  • World War Z premiere - London

    Brad Pitt arriving for the world premiere of World War Z, at the Empire Leicester Square, London.

  • World War Z premiere - London

    Angelina Jolie arriving for the world premiere of World War Z, at the Empire Leicester Square, London.

  • World War Z premiere - London

    Angelina Jolie and Brad Pitt arriving for the world premiere of World War Z, at the Empire Leicester Square, London.

  • World War Z premiere - London

    Angelina Jolie arriving for the world premiere of World War Z, at the Empire Leicester Square, London.

  • World War Z Premiere - London

    Angelina Jolie arriving for the world premiere of World War Z, at the Empire Leicester Square, London.

  • World War Z premiere - London

    EDITORIAL USE ONLY, NO MERCHANDISE, NOT TO BE USED AFTER DECEMBER 31, 2013: Muse perform tracks from the new film World War Z at Horse Guards parade in London after its world premiere at the Empire Leicester Square.

  • World War Z premiere - London

    EDITORIAL USE ONLY, NO MERCHANDISE, NOT TO BE USED AFTER DECEMBER 31, 2013: Muse perform tracks from the new film World War Z at Horse Guards parade in London after its world premiere at the Empire Leicester Square.

  • World War Z premiere - London

    EDITORIAL USE ONLY, NO MERCHANDISE, NOT TO BE USED AFTER DECEMBER 31, 2013: Muse perform tracks from the new film World War Z at Horse Guards parade in London after its world premiere at the Empire Leicester Square.

  • World War Z premiere - London

    EDITORIAL USE ONLY, NO MERCHANDISE, NOT TO BE USED AFTER DECEMBER 31, 2013: Muse perform tracks from the new film World War Z at Horse Guards parade in London after its world premiere at the Empire Leicester Square.

  • World War Z premiere - London

    EDITORIAL USE ONLY, NO MERCHANDISE, NOT TO BE USED AFTER DECEMBER 31, 2013: Muse perform tracks from the new film World War Z at Horse Guards parade in London after its world premiere at the Empire Leicester Square.

  • World War Z premiere - London

    EDITORIAL USE ONLY, NO MERCHANDISE, NOT TO BE USED AFTER DECEMBER 31, 2013: Muse perform tracks from the new film World War Z at Horse Guards parade in London after its world premiere at the Empire Leicester Square.

  • World War Z Premiere - London

    Angelina Jolie arriving for the world premiere of World War Z, at the Empire Leicester Square, London.

  • World War Z Premiere - London

    Olivia "Liv" Boeree arriving for the World premiere of World War Z, at the Empire Leicester Square, London.

  • World War Z Premiere - London

    Olivia "Liv" Boeree arriving for the World premiere of World War Z, at the Empire Leicester Square, London.

  • World War Z Premiere - London

    Producer Jeremy Kleiner arriving for the World premiere of World War Z, at the Empire Leicester Square, London.

  • Jolie makes first public appearance since double mastectomy

    File photo dated 02/06/13 of Angelina Jolie and Brad Pitt arriving for the world premiere of World War Z, as Jolie made her first public appearance since she revealed she had undergone a double mastectomy, as she and Brad Pitt walked the red carpet together.

  • World War Z Premiere - London

    Julia Levy-Boeken arriving for the World premiere of World War Z, at the Empire Leicester Square, London.

  • Muse Perform At The World War Z World Premiere

    LONDON, ENGLAND - JUNE 02: (NO CALENDAR, NO BIOGRAPHIES, NO PUBLICATIONS DEVOTED SOLEY TO MUSE) Brad Pitt attends the Muse performance at the 'World War Z' World Premiere at Horse Guards Parade on June 2, 2013 in London, England. (Photo by Eamonn M. McCormack/Getty Images for Paramount Pictures International)

  • Muse Perform At The World War Z World Premiere

    LONDON, ENGLAND - JUNE 02: (NO CALENDAR, NO BIOGRAPHIES, NO PUBLICATIONS DEVOTED SOLEY TO MUSE) Brad Pitt attends the Muse performance at the 'World War Z' World Premiere at Horse Guards Parade on June 2, 2013 in London, England. (Photo by Eamonn M. McCormack/Getty Images for Paramount Pictures International)

  • Muse Perform At The World War Z World Premiere

    LONDON, ENGLAND - JUNE 02: (NO CALENDAR, NO BIOGRAPHIES, NO PUBLICATIONS DEVOTED SOLEY TO MUSE) Brad Pitt attends the Muse performance at the 'World War Z' World Premiere at Horse Guards Parade on June 2, 2013 in London, England. (Photo by Eamonn M. McCormack/Getty Images for Paramount Pictures International)

  • Muse Perform At The World War Z World Premiere

    LONDON, ENGLAND - JUNE 02: (NO CALENDAR, NO BIOGRAPHIES, NO PUBLICATIONS DEVOTED SOLEY TO MUSE) A general view of the Muse performs at the 'World War Z' World Premiere at Horse Guards Parade on June 2, 2013 in London, England. (Photo by Eamonn M. McCormack/Getty Images for Paramount Pictures International)

  • Muse Perform At The World War Z World Premiere

    LONDON, ENGLAND - JUNE 02: (NO CALENDAR, NO BIOGRAPHIES, NO PUBLICATIONS DEVOTED SOLEY TO MUSE) A general view of the Muse performs at the 'World War Z' World Premiere at Horse Guards Parade on June 2, 2013 in London, England. (Photo by Eamonn M. McCormack/Getty Images for Paramount Pictures International)

  • Muse Perform At The World War Z World Premiere

    LONDON, ENGLAND - JUNE 02: (NO CALENDAR, NO BIOGRAPHIES, NO PUBLICATIONS DEVOTED SOLEY TO MUSE) A general view of the Muse performs at the 'World War Z' World Premiere at Horse Guards Parade on June 2, 2013 in London, England. (Photo by Eamonn M. McCormack/Getty Images for Paramount Pictures International)

  • World War Z - World Premiere - Inside Arrivals

    LONDON, ENGLAND - JUNE 02: (L-R) Mireille Enos, Brad Pitt and Nikola Djuricko attend the World Premiere of 'World War Z' at The Empire Cinema on June 2, 2013 in London, England. (Photo by Stuart C. Wilson/Getty Images for Paramount Pictures International)

  • World War Z - World Premiere - Inside Arrivals

    LONDON, ENGLAND - JUNE 02: Marc Foster and Mireille Enos attend the World Premiere of 'World War Z' at The Empire Cinema on June 2, 2013 in London, England. (Photo by Stuart C. Wilson/Getty Images for Paramount Pictures International)