You Don't Know What You're Doin'!
Directed By: Rudolf Ising (uncredited)
Produced By: Hugh Harman
Rudolf Ising
Leon Schlesinger (associate producer)
Released: October 21, 1931
Series: Merrie Melodies
Animation: Isadore Freleng
Norm Blackburn
Larry Martin (uncredited)
Film Editor: Bernard B. Brown (uncredited)
Voiced By: Orlando Martins (uncredited)
Music: Frank Marsales
Starring: Piggy
Preceded By: Bosko the Doughboy
Succeeded By: Bosko's Soda Fountain
LOONEY TOONS You Don't Know What You're Doin'! (Piggy) (1931) (Remastered) (HD 1080p)

LOONEY TOONS You Don't Know What You're Doin'! (Piggy) (1931) (Remastered) (HD 1080p)

2306 You Don't Know What You're Doin'!

2306 You Don't Know What You're Doin'!

You Don't Know What You're Doin'! (Redrawn Version)

You Don't Know What You're Doin'! (Redrawn Version)

You Don't Know What You're Doin'! is a 1931 Merrie Melodies short directed by Rudolf Ising.


Piggy picks up his girlfriend Fluffy and takes her to a theater where a hot jazz orchestra is playing. Piggy mocks the trumpet soloist, and plays a corny chorus of the 1873 hit "Silver Threads Among the Gold" on the saxophone. The audience, led by three drunk dogs in the balcony, then mock Piggy with the title song "You Don't Know What You're Doin'". Piggy is then joined onstage by one of the drunk dogs (a black dog is believed to be a prototype of Goopy Geer). Piggy picks up their bottle of bootleg hootch (the film was made during alcohol Prohibition in the USA), takes a swig, and starts having hallucinations; he pours some booze into the radiator of his automobile, which arches its back like a frightened cat and takes Piggy for a wild ride through the city.


The musical soundtrack was done by the then-nationally famous Abe Lyman Orchestra (though on some prints mis-attributed to the Gus Arnheim band), which adds a happy energy throughout the cartoon. The eccentric virtuoso trombone playing of Orlando "Slim" Martin is prominently featured. Martin played not only music but also some rather bizarre effects on his horn (the techniques he used to produce some of his sounds continue to puzzle other trombonists). His trombone solo representing the drunken automobile is especially memorable. The Schlesinger Studio had their sound effects department construct mechanical devices to roughly reproduce some of Martin's sounds, which became standard cartoon sound effects.



  • This short is considered to be one of the most amusing and effective cartoons from the studio's earliest years.
  • This short has the first usage of the well-known "trombone gobble" sound effect.
  • This marks the debut of Piggy and Fluffy, which were made as replacements to Foxy and Roxy.


  • Schneider, Steve (1990). That's All Folks!: The Art of Warner Bros. Animation. Henry Holt & Co.
  • Beck, Jerry and Friedwald, Will (1989): Looney Tunes and Merrie Melodies: A Complete Illustrated Guide to the Warner Bros. Cartoons. Henry Holt and Company. ISBN 0-8050-0894-2

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