Shave and a Haircut

An old cowboy walks into a barbershop for a shave and a haircut.

He tells the barber he cannot get all of the whiskers off because his cheeks are wrinkled with age.

The barber takes a little wooden ball from a cup on the shelf and tells the old cowboy to put it inside his cheek to spread out the skin.

When he's finished the old cowboy tells the barber that was the cleanest shave he's had in years.  But he wanted to know what would have happened if he had accidentally swallowed the little ball.

The barber replies, Just bring it back in a couple of days like everyone else does.