The last word, for now; humorist gives jokes a rest By DAVE BARRY Sun, Jan. 02, 2005 There comes a time in the life of every writer when he asks himself -- as Shakespeare, Tolstoy and Hemingway all surely asked themselves -- if he has any booger jokes left in him. For me, that time has come. I've been trying to entertain newspaper readers since the '60s, when I wrote ''humor'' columns for the Haverford College News. I put ''humor'' in quotation marks because when I go back and read those columns today, I don't get any of the jokes....