WASHINGTON - U.S. Rep. Patrick J. Kennedy was in damage-control mode yesterday, scrambling to explain flippant remarks at a Democratic party about never having to work a day in his life. ``I don't need Bush's tax cut,'' Kennedy (D-R.I.) was quoted as telling a Young Democrats party at Acropolis, a D.C. nightclub. ``I have never worked a (bleeping) day in my life.'' Kennedy insisted his words, reported in a Washington Post gossip column yesterday, were sarcastic and blown out of context. He did not challenge the veracity of the Post's quotes, however. ``In terms of my choice of words, I...