For a VERY short time, I drove with a fellow from NJ who was now living in NY with his girlfriend. The Jersey episode of South Park wasn't even a caricature of these two... in fact, I'd say it was a pretty mild treatment.
These two were either screaming about killing each other or dumping "I love you" at each other... and they'd switch instantly between the two modes.
They were also, (trying to be at least a little gentle here) incredibly stupid. That or they were incredibly good actors looking for a reality show.