Shin-Chan was investigating a sacred cult in the jungles of Africa when he was caught by one of the person. He was confined in a cave till the leader arrived. The leader told him that he need to tell him a statement. If he thinks the statement is true, then shin Chan's head will be chopped off. If he thinks that the statement is false, his head will be smashed with a hammer. What statement did our little cunning boy make to survive?