Nothing better than a bunch a of dudes calling each other "MF'in pieces of ####" because one of them has another teams jersey on that just scored a field goal. I was in the bathroom at Red's once and about 4 of them came in there and started beating the chit out of each other. That's the last place I need some drunk guy getting pushed into me, sending me into whatever is in front me.
Anyone still dressing like that post-30 (and meaning it... I'm not talking about for a costume party or a dress-up day for something) in a setting where alcohol is readily available is gradually going to create more problems as the day gets later.