This perfectly formed malaphor was uttered by Josh Miller on the radio show The Fan on 93.7 in Pittsburgh (Miller was a former punter for the Pittsburgh Steelers and is now a sports commentator). Miller was discussing the crazy antics of a fan at a baseball game and the nasty comments directed at him. “Open game” is a mashup of “open season” (a period of time when everyone is criticizing someone or something) and “fair game” (something or someone who is considered permissible to attack). The speaker may have had deer season on his mind, thinking of open season on game? A big shout out to John Kooser who heard this one and sent it in!