A man enters a barbershop for a shave. While the barber is foaming him up, he mentions the problems he has getting a close shave around the cheeks. "I have just the thing," says the barber, taking a small wooden ball from a nearby drawer. "Just place this between your cheek and gum."
The man places the ball in his mouth and the barber proceeds with the closest shave the man has ever experienced. After a few strokes the client asks, "What if I swallow it?"
"No problem," says the barber. "Just bring it back tomorrow like everyone else does."