When Presidential hopeful Michelle Bachmann appeared on "Late Night with Jimmy Fallon" Monday night, the show's house band, The Roots, broke into a rendition of the 1985 Fishbone song, "Lyin' Ass B**ch."  The band's leader, Ahmir "Questlove" Thompson on Tuesday called the decision to play the song a "tongue-in-cheek and spur of the moment decision," adding that the show's producers did not know the song would be played.  Thompson also added that he did not mean for Bachmann's feelings to be hurt.  Fallon later joked on Twitter that Questlove was grounded for the inconsiderate intro, while the show's producers declined to comment.