The Great Scout and Cathouse Thursday (1976)

Synopsis
In this broad comedy-western set in 1908 Colorado, Lee Marvin and Oliver Reed team up as Sam Longwood and Joe Knox, two con-men who once worked as a team. They reunite in order to get revenge upon their third partner, Jack Colby (Robert Culp), who used the trio's ill-gotten gains to become a high society big shot. Oliver Reed's ridiculously stereotypical portrayal of an Indian goes down in film history as the most absurd casting of a Native-American role since Howard Keel's "distinctive" portrayal of Levi Walking Bear in The War Wagon. Kay Lenz also appears as the sexy prostitute Thursday, who has an affair with Sam. ~ Paul Brenner, All Movie Guide