This method comes from Willi Schneider, a famous Austrian magician, and medium. You'll wrap the band around your wrist twice, ensuring the impossibility of what you're about to do next. As you start yanking on the band, the crowd will fear you'll break it - but on the third yank, something unexplainable will happen. The band will unwrap itself from your wrist rather than snap, and your wrist will be empty and free.