Three firefighters are placed online on your pedestal table. Take in one, the one on the right for example and explain that he is dizzy: he forgot his mermaid. In doing so, press the firefighter\’s helmet, nothing sounds. This on the left is also dizzy, he also forgot his mermaid. On the other hand, fortunately, the one in the middle has not forgotten its mermaid. The lean and pressing his helmet, you can hear a resounding \”Pouet-Pouet\”. You then ask a spectator where the firefighter has his mermaid. He will show you, of course, the one in the middle, but, taking up the firefighter in question, no tingling is heard. You offer to start again by recommending your spectator to be very careful, but whatever his answer, he will never find the firefighter unmears. Your spectator will always see only fire! Figure height: 25 cm.