You’ve already fallen in love with Jimmy Fallon’s “Ew!” character Sara. Now, the Tonight Show host has created a single featuring will.i.am.

“Sara” (played by Fallon) and “mir.i.am.’s” (played by you-know-who) new single “Ew!” hit YouTube and iTunes Monday night following its debut on the latest episode of The Tonight Show starring Jimmy Fallon. The two budding vocalists sing about all of the things that gross them out.

Watch the song and music video below:

Related: Watch Taylor Swift on “Ew!” with Fallon

The song, as ridiculous as it is, benefits a good cause. According to NBC, proceeds from the sale of “Ew!” on iTunes will go to the SeriousFun Children’s Network and i.am.angel Foundation.

Fallon is apparently very proud of his work. He encouraged fans to request it on the radio after it debuted on television: