FOX News host Bill O'Reilly appeared Thursday evening on The Colbert Report, just after Stephen Colbert appeared on FOX's The O'Reilly Factor.
"Folks, we are ready to rumble," Colbert says as he introduces "Papa Bear" O'Reilly to his audience, amid cheers and a smattering of boos.
"This was a huge mistake, me coming on here," O'Reilly says at one point. Later, O'Reilly kids that he could be elected mayor of San Francisco, and, after O'Reilly says "this is all an act," Colbert tells the FOX host, "If you're an act, then what am I?"
Colbert's appearance on O'Reilly's show is viewable here.
