Indestructible Handkerchief

Effect: A large safety pin is pulled through a handkerchief without tearing it.

Secret: Ask someone to hold a handkerchief out taut. Push a safety pin through the material, near the edge of the handkerchief. Hold the pin by the tail end and turn it towards yourself. Now pull the pin to the right. When you stop, push the pin forward so it goes back through the material. You have moved the pin from one place to another without tearing the handkerchief. What actually happens is that the material runs between the bar and the head of the pin.