One who purchases and drives a used police vehicle because he's an asshole; particularly one who gets a motorcycle and wears an "official" looking helmet to go along with his cheap, crooked aviator sunglasses and cheesy, porn mustache.
All of a sudden this patrol car pulls right up on my ass, I start shoving the buds in my mouth and chewing like crazy - then I realize he's just a fuckin' cop knobbler! ... so I ran him off the road.
A woman (or man, whatever submerges your submarine) who gives awful blow jobs. The name originates from Cobzeus, the Norwegian goddess or corn shucking, who once treated Hermes' penis as a cob of corn.