sword through neck
They bring an uninitiated viewer onto the stage. Put a wooden neck brace on her, as was often known in the Middle Ages for torture. Then you show off a sword and thrust the sword through her neck.
Your assistant will be as amazed as the audience. Because you immediately pull the sword out again and the person is still unharmed.
You will receive everything complete, including a German quick start guide. Guaranteed safe and easy to demonstrate.