Sanford and Son (1972)

Season 6: Episode 7

Fred becomes a victim of a con game when, two men convince him to begin a bogus special "Sanford & Son" sales promotion, in which the lucky winner wins $500. However, Fred has no intention of handing out that much bread but unknown to Fred, the con men have rigged the game so they end up being the lucky winners and Fred will have to pay them the money after all.