Who can shave three times a day and still grow a beard?

Why this works

This riddle plays on the dual meanings of "shave." While we often think of shaving as something we do to remove facial hair, in this case, it refers to the barber shaving other people. A barber can indeed shave clients multiple times a day for grooming, while still having the ability to grow their own beard. The clever twist lies in realizing that the barber's job allows them to shave others without affecting their own hair growth!