Late one evening, an officer was parked outside a local pub. He noticed a man leaving the bar who was so intoxicated that he could barely walk. The man stumbled around the parking lot for a few minutes with the officer quietly observing. After the intoxicated man had tried his keys on five different vehicles, he managed to find his car and fall into the driver seat. He sat there for a few minutes as a number of other patrons left the bar and drove off. Finally he started the car, switched the wipers on and off, flicked the indicators on, tooted the horn, and then finally switched on the lights. He remained stationery for a few more minutes as more cars left the parkinglot. After what seemed like an eternity, he pulled out of the lot and started to drive slowly down the road. The police officer, having patiently waited all this time, now started upthe patrol car, put on the flashing lights, promptly pulled the man over, and carried out a breathalyzer test. To his amazement the breathalyzer indicated no evidence of the man havingconsumed alcohol at all! Dumbfounded, the officer said "I¹ll have to ask you to accompany me to the police station; this equipment must be broken." "I doubt it," said the man, "tonight I¹m the designated decoy."