One day, a man walks into a dentist's office and asks how much it will cost to extract wisdom teeth.

One day, a man walks into a dentist's office and asks how much it will cost to extract wisdom teeth. Eighty dollars, the dentist says. That's a ridiculous amount, the man says. Isn't there a cheaper way? Well, the dentist says, if you don't use an anesthetic, I can knock the price down to $60. That's still too expensive, the man says. Okay, says the dentist. If I save on anesthesia and simply rip the teeth out with a pair of pliers, I can knock the price down to $20. Nope, moans the man, it's still too much. Well, says the dentist, scratching his head, if I let one of my students do it, I suppose I can knock the price down to $10. Marvelous, says the man, book my wife for next Tuesday!