I played a guy yesterday in an events game where, with a runner on second, stepped off and fake threw to a base for a combined five to 10 minutes. As I kept playing, he subbed in all of his position players for pitchers and proceeded to throw the ball around the infield and dodge fly balls.
I'm guessing that he was trying to get me to quit out of frustration with him, but it is silly that people stoop that low besides just playing the game.