As retold by Bruce Lowitt

A priest and a rabbi are sitting next to each other on an airplane.

After a while the priest turns to the rabbi and asks, "Is it still a requirement of your faith that you not eat pork?"

"Yes, that is still one of our beliefs."

The priest then asks, "Have you ever eaten pork?"

"Yes, on one occasion I did succumb to temptation and tasted a ham sandwich."

The priest nods in understanding and returns to the book he's reading.

A while later, the rabbi turns to the priest.

"Father," the rabbi asks, "is it still a requirement of your church that you remain celibate?"

"Yes, that is still very much a part of our faith."

The rabbi then asks, "Father, have you ever fallen to the temptations of the flesh?"

"Yes, rabbi, on one occasion I was weak and broke with my faith."

The rabbi nods understandingly and returns to his book.

A few minutes pass, then the rabbi says to the priest, "Beats the hell out of a ham sandwich, doesn't it?"