In person, George W. Bush is extremely forceful. He has a restless energy when he sits in a chair, and nearly leaps out of it when making certain points.
Not that I don't think irreverent humor and someone being filthy is funny, I just do what I do. Any comedian would admit throwing an f-bomb in there would help get a reaction. . . . I'm not on a Puritanical pursuit, but when I would curse in a joke, I believe I'm not done writing it.