Let's Do It Again (1975)

When an Atlanta milkman (Poitier) and his fast-talking factory worker friend (Cosby) want to take the wives on a long-planned vacation to New Orleans and need to find the cash to build a new meeting house for their fraternal lodge, they devise a long-shot scheme to hypnotize a scrawny, losing prizefighter (Jimmy Walker) into believing he is--and then becoming--a champion in this hilarious seque...