a side boob tap. Good game is the act of slapping the ass of the member of the same sex. The New Good Game is a gentle touch of the side boob and can be applied to either sex. More or less it is a legit excuse to touch a chick's boob.
My buddy and I just beat these 2 girls at beer pong, but rather than slapping their ass in attempt to congratulate them for a good effort, and for a quick thrill, we went for gold and gave them the New Good Game.
The act of viciously slapping someone on the rear, must be called out beforehand with "good game" much like the ball tag , cooter cudgel , or abortion punch . Can result in Ass Elbow
Steve: GOOD GAME!
Nolan: OWWW! I think you popped one of my hemorrhoids.