It works both ways, the jerks also know it's not worth making a scene in public and maybe even getting kicked full strength in the balls if they escalate too mu

It works both ways, the jerks also know it's not worth making a scene in public and maybe even getting kicked full strength in the balls if they escalate too much. They'll go to the back of the line with a simple "The line starts over there", as long as you're willing to fight in the small number of cases they're so insane they would in fact have a full on brawl at Target over a line.