One night, a police officer was stalking out a particularly rowdy biker bar
for possible violations of the driving-under-the-influence laws. At closing
time, he saw one of the bikers stumble out of the bar, trip on the curb,
try his keys on five different bikes before he found his. Then, sat on the
bike fumbling around several minutes, looking as if he might pass out
right there. Everyone left the bar and rode off. Finally, he started his
engine and began to pull away. The police officer was waiting for him. He
stopped the biker, 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 biker replied, "Tonight, I'm the
Designated Decoy."