"Oh, that was a walk? A carry? Up and down? Double-dribble? Out of bounds? We hate cheaters and you should too. For whatever reason, they're the only ones making the calls and then start to complain when nobody agrees including their teammates. Give the cheater their way once in awhile just to avoid an agrument but when they start to try and change the course of the game, take the ball and check up. If they don't like it, tell them to either ball up or shut up.