An awesome definition of automatic transmission from the urban dictionary:

You can spot cars with automatic transmissions as you drive on any road. The drivers step on the brakes for random cosmic events. If they see a fuzz, they step on the brakes. If they see a car pull up to a side street, they step on the brakes. If they come to an intersection, they step on the brakes. If they see a crow, they step on the brakes.