its an advanced version off doorknob
someone makes that shape with their hand and tries to get the people around them to look at it
if person A makes said shape, and person B looks at it. person A gets one punch
if person A makes said shape, and person B manages to put his pointer finger thru it (without looking), person B gets one punch
if person A makes said shape, and person B neither looks or pokes, noone gets any punches
said shape always has to be below the makers waist … no pointing at something in front of person B, which would essentialy FORCE them to see it …
get it ? good …