The performer displays a small cylinder with a hole running through it. At the bottom of the hole a rubber band is threaded across the cylinder. A small stick with a hook at one end and a cap at the other is pushed into the cylinder, and twisted by the performer, apparently threading the rubber band over the hook. When the cap is pulled out and released, the plunger is snapped into the cylinder by the action of the elastic. Having demonstrated this once or twice, the performer hands this over to a spectator to try. No matter how much he tries, the spectator just cannot thread the band over the hook. A novel puzzle, that seems impossible, till you learn the very simple, and clever secret.