Fred Armisen Cracks Up Questlove With 'Tonight Show' Impression of Diana Ross' Confused Drummer | Video

Fred Armisen sent Ahmir "Questlove" Thompson into a fit of giggles on Monday's episode of "The Tonight Show Starring Jimmy Fallon" with a pitch-perfect impression of an extremely specific musical moment. Armisen appeared on "The Tonight Show" to promote not just his role as Uncle Fester in "Wednesday" Season 2 but also his new comedy album, "100 Sound Effects." Near the end of his interview, however, Armisen announced that he wanted to perform a new musical impression for Fallon and "Tonight Show" viewers. "Do you guys know the song 'I'm Coming Out' by Diana . . .