A man enters a barbershop for a shave. While the barber is foaming him up , he mentions the problem he has, getting a close shave around his 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 client places 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" says the barber "Just bring it back tomorrow like everyone else does"