A driver is stuck in a traffic jam on the motorway. Nothing is moving.
Suddenly a man knocks on the window. The driver rolls down his window and asks, "What's going on?"
"Terrorists down the road have kidnapped Tony Blair.
They're asking for a £10 million ransom. Otherwise they're going to douse them with petrol and set them on fire.
We're going from car to car, taking up a collection."
The driver asks, "How much is everyone giving, on average?"
"Most people are giving about a gallon."