WATCH: Jimmy Fallon and will.i.am (AKA Sara and mir.i.am) Release “Ew!” Music Video

"The Tonight Show" premiered its first music video Monday. Host Jimmy Fallon and will.i.am performed as their teenage-girl alter-egos (Sara and mir.i.am) while rapping about things they think are just "Ew!"

Wearing wigs, braces and dresses, the BFFs weighed in on the topics that matter most to young girls, including bread bowls, duck lips, FaceTime and "impleggies" (butt implants.)

Sara's "annoying" stepdad Gary made an appearance, and Questlove had a cameo. Fallon is clearly very excited by his latest musical endeavor, tweeting, "#ohmygross," "Get Ew! on the radio!!" and "#Ew! Please request this to your local DJ?" will.i.am, meanwhile, tweeted a link to model Adriana Lima.

VIDEO: Watch Jimmy Fallon and Taylor Swift's "Ew!" sketch

In past "Ew!" sketches, Fallon recruited celebrities including Zac Efron, Will Ferrell, the Jonas Brothers, Lindsay Lohan, Michelle Obama, Seth Rogen, Michael Strahan, Taylor Swift and Channing Tatum to play sassy teens. For $1.29, Fallon and will.i.am's "Ew!" is available for download on iTunes. Proceeds from the sale of the song will benefit the SeriousFun Children's Network and i.am.angel Foundation.

(E! and NBC are both part of the NBCUniversal family.)

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