One day, Vera brings a dinosaur home. Mufti, as the little monster is called, causes a lot of chaos in the family. Mufti roars like crazy when things don’t go his way - for example, when it comes to lunch. He throws everything off the table and screams: "De la ko scho!" What does that mean? Of course! Mufti twists syllables and words. So the little dino says Aufgaben Haus instead of Hausaufgaben, Schirm Regen instead of Regenschirm, and Um Se Mu instead of Museum. Vera, Michel, Father, and Mother quickly get used to their funny guest. But one day, Mufti simply disappears. What remains are the amusing language games that provide fun and entertainment not just on rainy days. Anyone who reads this book and writes and draws in it will playfully acquire a good piece of language competence. The story is complemented by the whimsical illustrations of the well-known artist Konrad Golz.