I'm afraid they have us beat hands down in this department. This video doesn't do justice to the level of public drunkeness that was taking place in this massive tent. There had to be 2 or 3 thousand people in there. All drunk, all "singing". Good times! If you try, your mind's eye can see Gewilli right in the middle of this crowd, complete with orange prison suit, beer in hand, belting out a tune.
Of course the only thing to do after you drink a bunch of beer is to take a wizz......also in public of course.
If you consider yourself a beer loving, cyclocross fanatic, you simply must go to Belgium and take in a World Cup Race. Of course this is actually in Holland, but it's so close to the border that it's primarily Belgian fans.