SLP2001050802- 08 MAY 2001- ST. LOUIS, MISSOURI, USA: Comedian George Carlin listens as a fan asks a question during a live radio broadcast and book signing in Forest Park in St. Louis, Missouri, May 9, 2001. Carlin is on a 12 city in 12 day book signing tour for his new book, "Napaml and Silly Putty." cc/bg/Bill Greenblatt UPI