[M.E.2]

Recently a routine police patrol parked outside a bar in small town. After
last call the officer noticed a man leaving the bar so intoxicated that he
could barely walk. The man stumbled around the parking lot for a few
minutes, with the officer quietly observing.

After what seemed an eternity in which he tried his keys on five different
vehicles, the man managed to find his car and fall into it. 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 - it was a
fine, dry summer night. Flicked the blinkers on and of a couple of times, honked the horn and then switched on the lights. He moved the vehicle forward a few inches, reversed a little and then remained still for a few more minutes as some more of the other patrons' vehicles left.
At last, when his was the only car left in the parking lot, he pulled out
and drove slowly down the road. The police officer, having waited patiently
all this time, now started up his patrol car, put on the flashing lights,
promptly pulled the man over and administered a Breathalyzer test. To his
amazement, the Breathalyzer indicated no evidence that the man had consumed any alcohol at all!
Dumbfounded, the officer said, "I'll have to ask you to
accompany me to the police station. This Breathalyzer equipment must be
broken."

"I doubt it," said the obviously sober man, "Tonight I'm the designated
decoy."