Watch FMovies. Casting her devious filth hex on pig farmers, house painters, and football-playing children, The Dirt Witch delights in making everyone as unclean as herself, until one day a young girl takes pity on her and instructs the soiled sorceress in the ways of hygiene. Produced by the Encyclopaedia Britannica Educational Corporation as part of their “Joy of Growing” series of educational shorts for elementary grade children.