Outside of macho sports1, I can't recall any other situations where two grown men bicker to claim the honor of being the most disagreeable.
But in tonight's debate, both Obama and McCain spent a good deal of time outlining exactly why they don't follow their respective party lines.
1 E.g., professional wrestling, cage fighting, strongman competitions, badminton
McCain eats watermelon seeds!
But only James eats seamen for breakfast!