Filthy Stephen

When a man/woman is below the age of 25 and is introduced to a man in his late 40's who owns a Land Rover. The late 40's year old then places the 25 or below year old into the back of his Landy, where they are then kept from daylight permanently.

"How old are you?"
"25."
"Be careful around that old geezer, you'll end up getting a Filthy Stephen."