Gentleman's Relaxation Time

Common parlance for the screening of pornography, and the following session of masturbation, used to refer to this act and at the same time maintain the persona of a true gentleman.

Sir Worthington: My good man, care for a game of bridge?
Sir Harddick: No thank you, good sir. I am due for gentleman's relaxation time.
Sir Worthington: Indeed, as your maiden has left you for another gentleman.