My predictions were correct in a way. It really goes about the cosmopolite but he is described from another point of view.
  The guy tells a lot of stories from his world travelling experience in order to prove he is a true cosmopolite.He pictures the places he`s been to. And we are excited about his speech,but the last sentence changes our mood.This is that i like in O.Henry`s stories.The last moment shifts the tone of the whole story.