A Scandalized Günter Grass Faces His Public“Who is here?” a skinny, gum-snapping brunette demanded of the air, jostling her way through the serpentine line jamming the 92nd Street Y’s lobby last night. The answer, of course, was Nobel Prize–winning author Günter Grass, who was on hand to read from his new memoir, Peeling the Onion, in which he admits to serving in the Waffen-S.S. during the last year of World War II.