Assuming that you're referring to the poem of the city of the yes and the city of the no,
The poem uses an antithesis of Yes and No to represent openness and complete solitude
hope this helps
When comparing the man's legs to rubber in context, it sounds like he is unable to walk. Describing his legs as rubber would indicate they bent and bowed under his weight on them. He's probably either injured or lame.
The reaction is that it will cry for a dog
