The Impractical Joker Betty Boop's baking is interrupted by her obnoxious practical joking cousin Irving. Can Grampy out-joke the joker? Details Casts Posters Title The Impractical Joker Release Date 1937-06-18 Runtime 00 Hours 07 Minutes Genres Animation Comedy Production Companies Fleischer Studios Production Countries United States of America Mae Questel... Betty Boop (voice) (uncre... Jack Mercer... Cousin Irving (voice) (un... Everett Clark... Grampy (voice) (uncredite... Original Size (500x750) Original Size (750x1125)