A guy and several of his buddies used to frequent a certain restaurant.
The food was always good, but the waitress always looked and sounded very sour.
One evening, one of the friends was feeling rather good, and jokingly asked the waitress when she came to take their orders, "Do you believe in free sex?"
The waitress huffed up and yelled at him, "I certainly do NOT!"
"So," asked they guy, "what do you charge?"