A man enters a barbershop for a shave. While the barber is putting shaving cream on the man's face, he mentions the problems he's been having trying to get a close shave around his cheeks. "I have just the thing," says the barber, as he reaches for a small wooden ball from a nearby drawer. "Just place this between your cheek and gum." So, the man puts the ball in his mouth, and the barber proceeds with the closest shave the man has ever experienced. After a few strokes, the man asks in garbled speech, "And what if I swallow it?" "No problem," remarks the barber. "Just bring it back tomorrow like everyone else does."