I'm not 100% sure but I think it goes "I'm not really sure how it goes, but it's SAD and it's sweet..." instead of "short" and at least one source agrees with me... > http://www.azlyrics.com/lyrics/billyjoel/pianoman.html
Besides the typos, there are several words that are wrong, and missing a couple of phrases--Paul is a real estate novelist [who never had time for a wife, and] he's talking to davey.