Write a joke by using the ambiguity of symbolic meaning

One rainy day, in the library, I saw a beautiful girl throw an umbrella into the trash can, shyly walked up to the goddess and said, I don't have an umbrella. Can you take me with you? How can you stand such a thing? I immediately picked up my umbrella and handed it to my sister: Sister, it is not easy for your family to make money. How can you throw away your umbrella?