This young man is driving down the M1 in London, when he see this sign "Sisters of Mercy Escorts" five miles....so drives drives down the motorway for five miles and see the sign again, he turn off the motorway and goes down this road, where he see two big gates and on one of the pillar it say "Sisters of Mercy Escorts"..so he drives in and getting out the his car and goes up the main door, rings the bell....
A young nun comes out and show the young man in the the hallway, where the nun tell him of cost for a hour with a escorts...the young man hands over the fee to the nun...
The nun hand him a sealed envelope and show him into a room and tell him to open the door on the right hand side room...so the man does this and finds himself back in the car park
The man when opens the envelope to see the wording say "YOU BEEN SCREWED BY "SISTERS OF MERCY ESCORTS"....