Guy sitting at a bar approaches a pretty young lady and asks her, "would you sleep with me for a million dollars? be honest."
The lady blushes, pauses for a moment of contemplation and finally says, "well, I guess, yeah. I'd sleep with you for a million dollars."
So the man pulls a $20 out of his wallet, hands it to the lady and says, "let's go."
The lady, fuming, slaps the man across the face and demands, "what kind of girl do you think I am?!?"
The man replies, "well, we've already established that, were just negotiating price."