Yankee Dood It is a 1956 Warner Bros. Merrie Melodies theatrical cartoon short directed by Friz Freleng and written by Warren Foster.

Yankee Dood It was the last of three cartoons to be underwritten by the Alfred P. Sloan Foundation, which also underwrote By Word of Mouse and Heir-Conditioned.

The cartoon short is based on the fairy tale The Elves and the Shoemaker, set 150 years after that story took place (in the early 19th century).

His elf helper tells him that the elves are helping an outmoded shoemaker, but Elmer points out that it is the 20th century.

Unfortunately, his pet cat, Sylvester, uses the magic word, "Jehoshaphat" to turn Elmer's elf helper into a mouse and chases him around the shoemaker's shop.