A man is driving in his car with his girlfriend sitting next to him. She leans across and tells him that for every 10mph he speeds up she will take off an item of clothing and throw it out of the window of the car.

So he speeds up from 40 to 50 and she takes off her t-shirt. He keeps going and at 60mph she takes off her skirt and at 70 off come her knickers so she is sitting in the passenger seat totally naked.

Suddenly the car spins off the road and into some woods and collides at high speed with a tree. After both regaining consciousness the girl says that they should both get out of the car and go to find help. The man says that he'd love to but he's pinned in between the seat and the steering wheel. The girl then points out that she cant exactly go walking around looking for help when she's totally naked! So the man flicks off one of his shoes and tells her to hold it over her "privates" and go and look for help.

She gets out of the stricken car and heads back to the road where she manages to stop a lorry driver. She is totally histerical (and naked apart from her boyfriend's shoe over her privates!) and cries to the trucker that she and her boyfriend had just had an accident and her boyfriend was trapped.

Punchline:

The lorry driver pauses, looks down at her, and says, "Sorry love, but I dont think I'll be able to get him out of there!"