Ride 'Em Cowboy (1942)
Two peanut vendors at a rodeo show get in trouble with their boss and hide out on a railroad train heading west. They get jobs as cowboys on a dude ranch, despite the fact that neither of them knows anything about cowboys, horses, or anything else.
Directed by: Arthur Lubin
Starring: Bud Abbott, Lou Costello, Dick Foran, Anne Gwynne, Johnny Mack Brown, Judd McMichael
Links: IMDb, Movie posters, Movie stills