A man is driving down a country road. His car breaks down. Looking under the bonnet he can't see whats wrong. He sees a stranger sitting on a high wall next to the road. The stranger tells him its the on-board computer that has crashed and how to reset it.
"Are you a mechanic", asks the driver. "No I live in the mental home on this side of the wall..." says the other, "although there's absolutely nothing wrong with me!" - "I can see that." says the driver - "You're a wizz with cars, I'll tell the authoroties you've been put in the mental home by mistake" - "Thanks a lot", the man on the wall says.
The driver gets in his car, starts off, and has gone a couple of yards when a huge brick smashes the back window. Looking round the driver sees the man on the wall has thrown the brick and is waving his arms as he calls out "You wont forget to tell them will you?"
"Are you a mechanic", asks the driver. "No I live in the mental home on this side of the wall..." says the other, "although there's absolutely nothing wrong with me!" - "I can see that." says the driver - "You're a wizz with cars, I'll tell the authoroties you've been put in the mental home by mistake" - "Thanks a lot", the man on the wall says.
The driver gets in his car, starts off, and has gone a couple of yards when a huge brick smashes the back window. Looking round the driver sees the man on the wall has thrown the brick and is waving his arms as he calls out "You wont forget to tell them will you?"