In hacky sack, the Stalin Rule is a tricky move where you bend over backwards as the hacky sack is going up, catch the hacky sack on your chest and hold it there for a few seconds (otherwise known as a stall), and let it roll down towards your foot. At that point you boot it at the person closest to you, annhililating them while you catch them off guard.
It takes skill to be able to execute the Stalin Rule.
