A man walks into a barber shop looking to get a clean shave. The barber gives him a small wooden egg and tells him to put it under his cheek to help with the shave.
The man is skeptical at first but he inserts it into his mouth and sure enough, the shave is done beautifully with no nicks or scratches. The man, thrilled at this discovery says, “This thing it’s great! Tell me, what happens if I swallow it by accident?”
The barber just smiles and says, “In that case, you just bring it back tomorrow like everyone else.”