Originally Posted by WalkinBackToTexas

Under South American "V"ing* etiquette, you control whether or not someone can push ahead of you be keeping a 1 mm gap between you and the persons in front of and beside you. Occasionally an elbow strike or armbar becomes necessary, or even a rear naked choke if the person is ultimately successful in positioning in front of you.

*note that there are no Queues ... simply a V shaped mass of human bodies funneling through the gate/door/entrance.