The train
 

A priest and a rabbi are on a long train journey together when the priest starts up a conversation.
"You're not supposed to eat pork, but have you ever tried it?"
"Of course," replies the rabbi, "but come to think of it, you're supposed to remain celibat. Have you ever had a woman?"
The priest fumbles about a bit and finally mutters,
"Yes."
The rabbi grins and says,
"It's a lot better than pork, isn't it!"

Rotflmao!

Thanks Ragnar, nice one. I wish I could remember jokes as well as you do.