A priest is called away for an emergency. Not wanting to leave the confessional unmanned, he calls a rabbi friend and asks him to cover for him. The rabbi tells him he wouldn't know what to say, but the priest says he'd show the rabbi what to do. The rabbi agrees and he and the priest both enter the confessional.

In a few minutes a woman comes in and says "Father forgive me for I have sinned." The priest asks "What did you do?" The woman says "I committed adultery." Priest: "How many times?" Woman: "Three times." Priest: "Say three Hail Mary's, put $5 in the box and sin no more."

A few minutes later another woman enters the confessional. She says "Father forgive me for I have sinned." The priest asks "What did you do?" The woman says "I committed adultery." Priest: "How many times?" Woman: "Three times." Priest: "Say three Hail Mary's, put $5 in the box and sin no more."

The rabbi tells the priest that he thinks he's got it, so the priest leaves.

A few minutes later another woman enters and says "Father forgive me for I have sinned." Rabbi: "What did you do?" Woman: "I committed adultery." Rabbi: "How many times?" Woman: "Just once." Rabbi: "Go do it two more times. We have a special this week, three for $5."