Confession

A Roman Catholic priest and a rabbi find themselves alone in a railway compartment. After a while, the priest speaks, and the following dialogue takes place:
Priest: Tell me, rabbi, as we are alone, I am curious to know something. Have you ever eaten pork?
Rabbi: Nu, to be honest, yes, I did once.
[There is a short silence. Then...]
Rabbi: Tell me, father, as we are alone, I am curious to know something. Have you ever been with a woman?
Priest: Well, to be honest, yes, I did once.
[Another short silence. Then...]
Rabbi: It's better than pork.