SLP2001050804 - 08 MAY 2001 - ST. LOUIS, MISSOURI, USA: Comedian George Carlin waves from the back of a limosine as he leaves a book signing in Forest Park in St. Louis, Missouri, May 8, 2001. Carlin is on a 12 city, 12 day tour for his new book, "Napalm and Silly Putty." rlw/bg/Bill Greenblatt UPI