A man goes to a disco and starts chatting up a very attractive looking Chinese girl. After a night of cavorting, she asks him back to her place 'for a coffee'.
They get to her flat and she tells him to get himself a drink while she slips into something more comfortable. Just as he finishes his drink the sexy Chinese seductress returns wearing only a see through negligee. "I am your sex slave" she says "I will do ANYTHING you want".
The man can't believe his luck "Hmmm" he says grinning from ear to ear, "I really fancy a 69" "f**k off" replies the girl "I'm not cooking at this time of the night"