Decoy

[caraohara]

One evening a police officer was staking out a particularly rowdy bar in order to catch potential drunk drivers. At closing time, he saw a man come stumbling out of the bar, sway across the street and try his keys on five different cars before he found his own. He sat in the front seat fumbling around with his keys for several minutes. Everyone else left the bar and drove off.

Finally the man started his engine and began to drive off. The police officer, waiting for the man the whole time, stopped the driver, read him his rights and administered a breathalyzer test. The results showed a reading of 0.0. The puzzled officer demanded to know how this was possible. The driver replied, "Tonight I'm the designated decoy."