Some people go for a footy ruck 'for the buzz', They will follow their team but the only match that really matters to them is against the opposition supporters, On the pitch results dont matter, Turning over the home firm in their own backyard does.
These generally ruck with their own kind, and often pre arranged.

Then you get those who follow the team passionately, but for some strange reason think that an opposing supporter should be abused and possibly twatted, bear in mind these will only do it if theyve got backup or a bellyfull of lager.