An old retired guy goes to the barber shop for a haircut and a shave. As the barber is prepping him for the shave, the old guy says, "I've got so many wrinkles on my face now that I can't get all the whiskers out of them when I shave".

The barber says, "Put this little ball in your mouth and push it against the inside of your cheek. It will smooth out the skin".

When the barber is all done the old man feels his face and says, "Wow! That's the smoothest shave I've had in years, thank you so much". The barber says, "You're welcome".

Then the old guy says, "I gotta ask. What if I had accidentally swallowed the ball?"

The barber replies, "Ahh, that's not a problem. You just bring it back in a couple of days like everyone else does".