 His most revealing pose was for a 1989 MAD Special for which he'd been assigned to create an actual pair of men's boxer shorts with a repeating pattern of Alfred E. Neuman's face.Clarke impishly arrived at MAD's offices while wearing the underpants, and from there, it took little convincing to get him to model them on the cover of the Special.Of Clarke's 600+ "MAD" articles, his favorite was "A MAD Look at the Joys of Scuba Diving," a collaborative 1966 piece that came together with writers Dick DeBartolo and Al Jaffee during a staff trip to San Juan.