Jimmy Fallon didn't think that one was very funny.
On Monday, the comic welcomed rising Republican star Michele Bachmann on his eponymous late night NBC talk show.
As Bachmann, 55, made her entrance to join Fallon on the couch -- and house band The Roots played the 1985 Fishbone song "Lyin' Ass Bitch," in a reference to the Minnesota Congresswoman's oft-scrutinized remarks in debates and other appearances.
After considerable backlash, Fallon apologized for the surprising partisan snipe via Twitter.
"I'm honored that @michelebachmann was on our show yesterday and I'm so sorry about the intro mess. I really hope she comes back," he wrote.
Roots drummer Questlove told Us Weekly that Fallon and the show's producers weren't warned in advance about their controversial song choice. "The performance was a tongue-in-cheek and spur of the moment decision. The show was not aware of it and I feel bad if her feelings were hurt. That was not my intention."
Fox News' Todd Stames savaged the incident. "Could you imagine if the network had pulled a similar stunt with First Lady Michelle Obama or Secretary of State Hillary Clinton? NBC is not commenting and Fallon doesn’t appear to have the fortitude to respond. So allow me to fill in the blanks: NBC, you disgust me," he said.
Watch the video of the controversial entrance -- in which The Roots substitute the rather profane lyrics with "la la la" -- now.