In this video from ViralVideoJunkies we learn the magic trick where you pass a coin through a handkerchief. Take the coin and place it underneath the scarf. Hold it by the coin and pinch it so you have a bit of material in between the coin and your other finger. When you make the move to put the coin back in the scarf you are actually not just covering the quarter back up, but you are taking both sides of the scarf and flipping it. Now you have a firm grip with your thumb and finger on the coin, but now the quarter will be on the outside of the scarf. Now twist it to show that the form of the quarter is inside it, but then the coin will come through because it is already on that side!