Letterman: after the singer brands him a 'sick fuck': 'You realize this is being broadcast don't you?'

Madonna: 'Is that a rug?' (referring to David Letterman's hair)

Madonna: 'Listen, all you do is talk about my sex life on your show, so now you don't want to talk about my sex life when I'm on your show?!'

'I think I have a dick in my brain. I don't need to have one between my legs.'