One
night, a police officer was stalking out a particularly
rowdy bar for possible violations of the driving under
the influence laws. At closing time, he saw a fellow
stumble out of the bar, trip on the curb, and try his
keys on five different cars before he found his. Then,
sat in the front seat fumbling around with his keys
for several minutes. Everyone left the bar and drove
off. Finally, he started his engine and began to pull
away.
The police officer was waiting for him. He stopped
the driver, read him his rights and administered the
Breathalyzer test. The results showed a reading of
0.0. The puzzled officer demanded to know how that
could be. The driver replied, "Tonight, I'm the
Designated Decoy."