A man is driving along a dusty old back road when he sees a sign that says, "Sisters of Mercy House of Prostitution."

A man is driving along a dusty old back road when he sees a sign that says, "Sisters of Mercy House of Prostitution."

Barely believing his eyes, he turns into an old truck stop - and sure enough - there's a big neon sign that says "Sisters of Mercy House of Prostitution."

He knocks and a wizened old nun opens the door.

"$50 bucks to get fucked in here," she says.

The man forks over the money and runs inside. He goes down a long hallway and comes to another door. He knocks and a moderately attractive nun answers.

"$100 to get fucked by the Sisters of Mercy, friend."

He hands over the cash, runs through the door, down another hallway, and knocks on the door at the end.

A stunningly beautiful nun opens the door and says, "$500, best fucking of your life, just through here."

The man hands over the money, runs through the door and finds himself outside. The door slams shut behind him, and above the door he sees a sign.

"You have just been fucked by the Sisters of Mercy House of Prostitution."