Button-cute, rapier-keen, wafer-thin and pauper-poor is S. J. Perelman, whose tall, stooping figure is better known to the twilit half-world of five continents than to Publishers' Row. That he possesses the power to become invisible to finance companies; that his laboratory is tooled up to manufacture Frankenstein-type monsters on an incredible scale; and that he owns one of the rare mouths in which butter has never melted are legends treasured by every schoolboy.