A female motorist was about two hours from Dunstable when she was flagged down by a man whose lorry had broken down.
"Are you going anywhere near Whipsnade Zoo?" he asked her.
"Sure," she replied, "need a lift?"
"Not for me. I'll be spending the next three hours fixing my truck. But I've got two chimps in the back which have to be taken to Whipsnade Zoo.
"They're a bit stressed already so I don't want to keep them on the road all day. Could you take them to the zoo for me? I'll give you £100 for your trouble."
"I'll be happy to," said the woman.
So the two chimpanzees were ushered into the back seat of the woman's car and carefully strapped into their seat belts. Off they went.
Five hours later, the lorry driver was driving through Woburn when suddenly he was horrified.
There was the woman walking down the street and holding hands with the two chimps, to the amusement of a big crowd.
With a screech of brakes he pulled off the road and ran over to the woman.
"What the heck are you doing here?" he demanded.
"I gave you £100 to take these chimpanzees to Whipsnade Zoo."
"Yes, I know," said the woman, "but we had money left over, so now we're going to Woburn Safari Park."