Show the audience a sword. Take an apple or orange and push the sword through them. Then push the sword through the stocks and show it to the audience. Ask an spectator to wear the colllar-like stocks round his / her neck. To be more sensational, ask the person if he wants to say anything, as his last will. This causes laughter as well as excitement. Then thrust the sword through the neck so that both ends of the blade are seen completely. No pain and no blood.