What's your game

In all seriousness though, saying "what's your game" is normally something a cowboy says when he's provoked or offended by what someone is doing or saying and another common phrase that's said rather than "what's your game" is "what're you playing at, boy" and you gotta lay alot of emphasis on the "boy". Really they can also mean the same thing as "what in tarnation" but essentially the phrases (excluding "what in tarnation") mean what are you doing.

A game which you masturbate in