A few years ago, me and my two moron friends went to the pub and started discussing who were better, Queen or U2 (Queen, obviously

).
It got heated to the point that these two started throwing punches at each other and were barred from the establishment! I don't socialize with them anymore.
It's not that they hated each other and were merely using it as an excuse to rumble, they simply became so passionate about the subject in hand that a punch-up ensued.
So boardsies, ever got into a pub debate with friends over something trivial that ended in fisticuffs?