What do you think of people who try to butt in line when no ones looking?

Hey, it's not so much people trying to butt in line when no one is looking. Several times at my Post Office, and there's ALWAYS a long line there, there is always some joker that wants to zoom right up to one of the customer windows without waiting on line...And of course a scene is created by angry people who have waited a long time...including me..I do tend to be rather vocal about it....hehe