A man driving in the middle of nowhere sees a sign saying, "Sisters of Mercy House of Prostitution, 5 mi." What?! He's never heard of such a thing. But it gets his imagination going.

Awhile later, he sees another sign: "Sisters of Mercy House of Prostitution, 1 mi." By now he's breathing a little heavily, imagining in detail how it would be to do it with a nun. When he sees the sign for the turnoff, he takes it. 

He parks in the parking lot and goes to the nearest door. It bears a sign: "Sisters of Mercy House of Prostitution. All proceeds distributed to the poor."

Eagerly, he goes in and finds a shy young nun behind a desk, her eyes downcast.

"How much?" he asks.

Without raising her eyes, she says, "One hundred dollars." 

He pays, and she leads him into the cloister. They go through corridors, around corners, and down hallways, until finally they reach a tall double door. Eyes still downcast, she motions him in to a small anteroom. She gestures to another double door across from them and says, "Go through there." Then she leaves him.

Hot and ready, he races through the door—only to find himself back out in the parking lot. The door snaps shut and locked behind him.

In front of him is a sign:

"You have just been screwed by the Sisters of Mercy. Go in peace, and God bless you."