When the following behaviors are included in the specific rules of the game being played, they are considered fouls at pool. If many fouls occur on a single shot, only the most serious is punished. If a foul is not called before the following shot, it is presumed that the foul did not occur. Making sure the cue ball does not touch any other ball except the one being played - this includes the pocket balls. If an object other than the cue ball touches the playing ball, it is illegal for the player to shoot again until the ball has been cleaned with a brush or towel-moved by another player-off the object's influence. Calling "foul" too late - the shooter must call "foul" before he takes his next shot. If he fails to do so, then he has given the opponent the chance to block the shot and prevent a foul being committed. This rule applies even if the player believes that he has not touched any other balls. He has still committed a foul because blocking the shot was an option available to the opponent. Taking more than two shots per turn - in order to give everyone a fair chance at winning, players are limited to taking no more than two shots per turn. If you take more than two shots in one turn, others will be able to take advantage of your extra shots by shooting first. These are just some examples of fouls at pool.