guillotine.

About guillotine

The Guillotine is a magic trick where it appears that a blade of a guillotine passes through a person's neck without harming them. Variations on the theme have been performed for hundreds of years, with documented examples appearing in print in the 16th century. The most common modern variation is the finger guillotine or finger chopper, a pocket-sized version that appears to chop off the magician's finger.