If you have an encounter with the police, be polite and maybe even friendly. But don't get too informal, as one man in Pennsylvania did when an officer pulled him over for driving without his lights on:

Officer Adam Bonsell says Decker told him, "Thanks, buddy," and tried to high-five him. Bonsell told him, "That's not how it works" and gave Decker field sobriety tests.

Police say Decker's blood-alcohol content was 2 1/2 times the legal limit for drivers.

Link -via Dave Barry | Photo: Flickr user SashaW