According to me, the speaker feels sad about having such a big nose. In the poem,he feels bad for having such a long and ugly nose because whenever he goes people make fun of him. But in the poem, the speaker father tell him that there are more big things to regret. So the speaker, also make fun of his nose by saying that whenever he sneeze, the trees around him lose their leaves. Also, he tells that people tells that they have seen smaller noses on elephants and rhinoceroses than that of nose he have.