You Don't Know What You're Doin'!.The story involves the character Piggy, who picks up his girlfriend Fluffy and takes her to a theater where a hot jazz orchestra is playing. Piggy mocks the trumpet soloist, then crashes the stage to play a corny chorus of the 1873 hit "Silver Threads Among the Gold" on the saxophone. The audience, led by three shabbily-dressed drunken dogs in the balcony, mock Piggy with the title song "You Don't Know What You're Doin,'" as Piggy defends his self-perceived "talent." One of the tipplers (a black dog, perhaps a prototype of Goopy Geer) joins Piggy onstage. The dog drinks from a bottle of bootleg hootch (the film was made during alcohol Prohibition in the USA), and belches in Piggy's face...