October 7, 2014 9:06 AM EDT

Jimmy Fallon’s recurring sketch “Ew,” in which Fallon dresses up as a tweenaged girl, got its own song Monday night.

Black Eyed Peas singer will.i.am joined The Tonight Show, dressing up as a young girl complete with retainer (and beard), to perform the song along with Fallon.

The song, aside from featuring copious amounts of the word, “ew,” is also available for purchase on iTunes.

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