One night a police officer was staking out a particularly rowdy bar for possible DUI violations.©JOKEDEMO.COM

At closing time, he saw a fellow tumble out of the bar, trip on the curb, and try his keys in five different cars before he found his.©JOKEDEMO.COM

Then he sat in the front seat fumbling around with his keys for several minutes. Everyone else left the bar and drove off.©JOKEDEMO.COM

Finally he started his engine and began to pull away. The police officer was waiting for him.©JOKEDEMO.COM

He stopped the driver, read him his rights and administered the Breathalyzer test.©JOKEDEMO.COM

The results showed a reading of 0.0.©JOKEDEMO.COM

The puzzled officer demanded to know how that could be.©JOKEDEMO.COM

The driver replied, "Tonight I'm the designated decoy."