Like Dude (Dean Martin), in the AR game Kryten is an alcoholic sheriff, mocked by the other men in the saloon, but he manages to sober up and take on a gang of outlaws.
As they enter the saloon, Rimmer says "I've seen westerns. I know how to speak cowboy" then orders dry white wine and Perrier. Lister says "What westerns have you seen? Butch Accountant and the Yuppie Kid?"