Count Me Out (1938)
Egghead figures the fastest route to fortune is a mail-order boxing course. Once he completes it, he challenges champ Biff Stew, who beats him senseless while the course’s record keeps offering pointers mid-fight. Then, purely by chance, Egghead lands a punch that lays Biff out cold—only for the scene to reveal it was all a fantasy in Egghead’s mind, after the practice equipment knocked him out for real.