A man's walking late at night when he sees a woman in the shadows. "Twenty bucks," she says. He's never been with a hooker before, so he decides what the hell. They're going at it for a minute when all of a sudden a light flashes on them-- It's a police officer. "What's going on here, people?" asks the officer. "I'm making love to my wife," he answers indignantly. "Oh, I'm sorry, I didn't know," says the cop. "Well, neither did I until you shined that light in her face."