by Aaron Scott
(Sperry, OK, United States)
As you hold your hand out to the side, the finger of your choice (minus the thumb, from my experience ^_^) begins to bend backwards, until it's completely hidden from view!THE SECRET:
Thread! The setup is to have your thread (color depends on your surroundings, preferably a lighter thread but not white, size depends on your finger) tied firmly to the belt loop on the back of your pants. At the other end you need a slip knot.
Now the length of thread should be enough to reach from your back pocket to your finger tip, with your arm at a comfortable position.
When the time comes, slip your fingertip into the slip knot and slightly extend your arm from your side, relax your hand and allow the string to pull your finger back.
Once your done relax your arm and remove your finger from the thread quickly, as most people wish to examine your hand immediately! ;)