Jimmy Fallon welcomes Bachmann to show with song "Lyin' Ass Bitch"

The Roots have famously underscored a few choice Late Night With Jimmy Fallon guest appearances with clever walk-on music. When Ashlee Simpson appeared on the show, they played Milli Vanilli’s “Girl You Know It’s True.” “What made this classic was the fact we did the VH1 Behind the Music version of the song in which Vanilli explained that the broken loop kept going “Girl, you know it’s … girl, you know it’s …” when they got busted for lip-synching in concert — and that is how we did it verbatim,” ?uestlove once told Rolling Stone. Heidi Montag and Spencer Pratt strode onstage to the sounds of Beck’s “Loser” (“They were none the wiser,” ?uest chuckled). And last night they added a gem to their repertoire, welcoming Republican rep Michele Bachmann with Fisbone’s “Lyin’ Ass Bitch.” She, too, was none the wiser.