The only half decent JW joke I know:
The butcher goes for his haircut. The barber says "I am retiring, so this haircut is free to thank you for your custom all these years."
The next morning the barber goes to open shop and the butcher has left a basket with steak and other meats, and a well wishing note.
The baker goes for his haircut. The barber does the same, and next day he finds a basket with cakes and bread in it and a kind note.
Then a pioneer goes for his haircut. The barber says "I am giving you a free haircut to thank you for your custom all these years."
The next morning the barber goes to open shop and there is a queue right around the corner of pioneers waiting for their free haircut.
HB