Fritzchen was supposed to remember three sentences. He asks his mother, "Mom, do you have any news?" The mother replies angrily, "Stop it!"
Fritzchen goes to see his father, who is watching a football match. When a goal is scored, he shouts, "That's it!"
Finally, he asks his sister, "Sister, do you have anything to say?" She is currently reading a story about a fool and says, "He is the dumbest person in the world!"
The next day at school, the teacher asks, "Fritzchen, did you learn the phrases?" Fritzchen replies, "Stop it!" The teacher is shocked: "Fritzchen! Don't say that to me. Go to the principal immediately!" Fritzchen shouts, "That's it!" Arriving at the principal's office, he asks, "Who do you think I am?" Fritzchen promptly replies, "He's the dumbest person in the world!"