A priest and a rabbi who are very good friends coincidentally need to buy new cars at the same time, so they decide to go shopping together.

They visit all the automobile dealers, and both of them wind up choosing to buy the same model and same make of car. They buy the two automobiles and are just about to drive them out of the dealership, when the priest says to his friend, "I have an idea. Wouldn't it be a nice gesture for each of us to bless the other one's car?"

"That's a great idea," replies the rabbi.

So the priest goes over to the rabbi's car and sprinkles it with holy water. Then the rabbi goes over to the priest's car and cuts an inch off the tail pipe.