It Ain't Hay 1943
Directed by Erle C. Kenton | Starring: Bud Abbott, Lou Costello, Eugene Pallette, Cecil Kellaway
Abbot and Costello must find a replacement for a woman's horse they accidentally killed after feeding it some candy. They head for the racetrack, find a look-a-like and take it. They do not realize that the nag is "Tea Biscuit," a champion racehorse.