No women are hacked to pieces in "Fraternity Vacation." but they are the victims of violence all the same - the kind of violence that denies them the opportunity to be as interesting, as aggressive, and as free to choose as all the guys in this brain-damaged film. Their basic role here is to be the prizes in a male sexual competition. Since the guys in this movie are shallow, narcissistic, self-obsessed dummies, to be the prize is to lose the game, but in a movie like this, those are the rules.