A priest and a rabbi operated a church and a synagogue across the street from each other. Since their schedules intertwined, they decided to go in together to buy a car. After the purchase, they drove it home and parked it on the street between them.
A few minutes later, the rabbi looked out and saw the priest sprinkling water on their new car. It didn't need a wash, so he hurried out and asked the priest what he was doing.
"I'm blessing it," the priest replied.
The rabbi considered this a moment, then went back inside the synagogue.
He reappeared a moment later with a hacksaw, walked over to the back of the car and cut off two inches of the tailpipe.
BAD JOKE DISCLAIMER: We recognize that religious humor can be risky. It is our hope that by laughing at ourselves (and others) we can make this subject more approachable. If you find any of these objectionable, we apologize. As with most jokes, the original authors are unknown - but we thank them.