Nothing makes that clearer than when he has Dennis Miller on. He steps all over his punch lines and doesn't get most of his jokes. Yet he still insists on trying to go toe to toe with Miller with what he believes to be clever quips. Watch Miller's face during some of these exchanges. You can see he's thinking you pompous ass you have no idea what I'm talking about.
I’ve seen that too when Dennis is on. It’s pathetic watching O’Reilly ‘trying’ to be funny, trying to be like Dennis, after all can’t have Dennis getting all the laughs. And it is very tiring watching BOR stepping all over all his guests while they speak.