A police officer was on stake out one night for drunk drivers at the local bar.
Shortly after the bar closed a man stumbled out, tried his key in several cars, finally he found a car. Upon entering it, he passed out. While this was going on, all of the patrons of the bar drove off. Shortly after the last car left the parking lot, the man awoke, started his car and exited the parking lot.
The officer promptly pulled him over and gave him a sobriety test which he passed with flying colors. The officer asked the driver about his behavior. The drivers response... 'Im the designated decoy'.