The singer joined the 'Tonight Show' host for the latest installment in his tween talk show sketch.
Ariana Grande channeled her roots as a Nickelodeon star on Friday, appearing on the Tonight Show and taking part in one of Jimmy Fallon’s signature sketches: tween talk show "Ew!"
Grande played Alexa in the sketch, "bestie" to Fallon’s character Sara (with no "h," because "h’s are ew"). The two performed their secret handshake and snapped a "bffelfie," a.k.a. a "best friends forever selfie," before competing in a new segment: The "Ew!" Sing-off!
It's time to take a BFF-elfie! #FallonTonight pic.twitter.com/Ei13IY6fqv
— Fallon Tonight (@FallonTonight) March 21, 2015Grande busted out one of her signature vocal riffs on the sketch's titlular exclamation, but Fallon's character was less than impressed.
"That was okay, I guess," he shrugged.
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For the "Ew!" speed round, Grande’s character declared Richard Dreyfuss "cute," but turned up her nose at a venti latte.
"I prefer grande," she declared as the two dissolved into giggles.
WATCH: Ariana Grande Gives Her 'Sam & Cat' Character a Major Send-Off
Grande talked to ET about saying goodbye to her Nickelodeon character Cat Valentine last year. See more in the video below.