Gnarketing: The act of aligning a brand with a less than clean-cut teamrider/spokesperson/hanger-on, to promote the perception that the brand is anti-corporate, alternative, rule-breaking or otherwise just plain cool.
Person 1: Did you hear Sudsy Clean Bodywash is using John Smith in their new commercials?
Person 2: You mean the baseball player who hit an unpire in the face with his bat after that lousy call last week?
Person 1: Yeah, total gnarketing. All the angry guys will be backing that brand now.