A car driven by a family of bees is driving along the motorway
when the driver (also a bee) spots a caterpillar by the hard
shoulder looking for a lift. The family finds out that the
caterpillar is going to the same destination and let it in.
After a few miles, the car grinds to a halt - it has run out of
fuel. The driver gets out of the car and passes motion into the
fuel line. Amazingly, when he gets back into the car, it's able to
restart and carry on driving.
This scenario repeats itself several times, with a different
passenger bee getting out to take a leak. The next time the car
stops after all the bees have taken a turn, the caterpillar offers
to do the same. However, the driver rejects the caterpillar. This
was the reason why:
The car runs on bee pee (BP).