The Barber of Seville.

Woody is standing outside the Seville Barber Shop looking at the ads. Wanting a "victory haircut", he decides to enter the shop only to find the owner has stepped out for a physical. Woody decides to cut his own hair ("I cut my own teeth") but unfortunately is mistaken for the owner when two other customers enter, one an Indian who wants a quick shampoo and the other, a construction worker who wants "the whole works" and, unfortunately, gets it.