A priest walks into a barbershop. After he gets his hair cut, he goes to pay. The barber says “I do not charge men of faith.” The next day the priest leaves twelve eggs in front of the barbershop as thanks.
Soon after, a monk walks into the same barbershop and gets his hair cut for free. The monk leaves twelve apples by the door as thanks.
A few days later, a Rabbi walks into the barbershop. He gets his free haircut. The next day the barber comes to work to see twelve Rabbis by the door.