1. Flora gives Ulysses a donut. Flora's dad comes downstairs. " Donut touch my donut!," said Ulysses. Donut sounds like do not which would make sense for the sentence.
2. Ulysses finds the vacuum Flora's dad made. He turns it on. He zooms around the neighboorhood, knocking down many things by accident. He is failing from the vacuum like a flag fails from it's pole. Soon, all the neighbors ask Flora and her parents if their stuff was broken (they were the only ones without broken stuff). This creates a funny picture in your head.