O'Reilly screwed up because Whoopie's screaming got to him and he mis-spoke. Too bad because he almost had her ready to bust out of her fake-for-tv personality. She had already gone through all her faces, had been screaming at the top of her lungs, and was cursing. Another few seconds and she would have been "M-Fing this and M-Fing that" , "Bustin' a cap" and every other thing. O'Reilly gave her a tiny crumb to grab onto and then Behar gave her the idea to walk out, saving the whole audience (whoever the hell THEY are) from seeing the real Whoopie.