Funny Racial Joke

A man is walking down the street and sees a beautiful paki woman with extremely large boobs. As he is passing her he asks, "If I gave you $100 could I touch your boobs?"
She is annoyed but after some persuiation she says okey. He enjoys it and then hesitates but asks at last. What's about screwing ?
Pakistani woman says - it will be 10 $. My usual charges.