The fool and the boy

It is said that a muffler came out of his house carrying a boy with a red shirt on it. He walked by and then forgot it. He said to everyone who saw him: "Did you see a boy wearing a red shirt?" One of them said, "Perhaps this is the boy you carry on your shoulders." He raised his head and looked at the boy and said angrily, "Did not I tell you not to leave me?"