Threaded by JT MagicThe Classic Needle Swallowing Trick Reimagined for Safety, Comfort, and Real World Performance The Needle Swallowing Trick is one of the most legendary effects in magic. Eight sewing needles go into the mouth. A length of thread follows. And moments later, the magician pulls the thread back out with every needle impossibly threaded onto it. It's visual. It's shocking. It gets huge reactions. But the traditional method comes with a real problem: risk.