School for Scoundrels

"School for Scoundrels: or How to Win Without Actually Cheating!", is a 1960 British comedy film inspired by the "Gamesmanship" series of books by Stephen Potter. The main character, played by Ian Carmichael), is a failure in sport and love, and the easy victim of conmen and employees alike. He enrols at the "School of Lifemanship" in Yeovil, run by Dr. Potter (Alastair Sim), who teaches him how to win in life and get the better of his rival (Terry-Thomas), through various underhanded, but not exactly dishonest, means.