subject from making intelligible speech still permit loud, inarticulate noises to call for help. Thus, a pattern of noises, such as three grunts in rapid succession, is sometimes used as a safeword by BDSM players. It is also common to use an additional non-verbal safety mechanism, such as a solid object held in the hand that can be released by the gagged person to signal distress. Types of gag Ball A ball gag is usually a rubber or silicone sphere with a strap passing through its diameter. The most common diameter is , but other sizes can be found. The ball is strapped into the mouth behind the teeth, with the straps going around the head to secure it in place. They are used as a sign of control by the dominant. If the ball is very large, it may be difficult to insert behind the teeth or to remove it. The wearer can still be heard, but it renders their speech completely unintelligible, distorts their facial features, and causes drooling if the wearer attempts to talk. A wiffle gag is a simple ball gag that replaces the standard solid rubber ball with a light plastic ball similar to the one used for the game of floorball. It is generally safer due to the constant airflow. Bit A bit gag is styled like the bit used in a bridle for a horse, and much of its sexual appeal stems from fetishistic symbolism in pony play. It consists of a bar that is held in place in the wearer's mouth by straps or other devices. Unlike the metal bit that is most common in horse bridles, the bar of a bit gag is usually a soft rubber cylinder. It is not very effective in preventing speech, unless combined with mouth stuffing, although it will make it somewhat more difficult for the wearer to produce coherent speech. Occasionally, reins are attached. Because of the possibility of injury to the lips, the bit gag is not suitable for rough play. Butterfly A butterfly gag is a wing-shaped gag that is usually inflatable by means of a rubber bulb. The central part fits behind the teeth to fill up the mouth, while the wings go between the teeth and the lips. The gag inflates in the shape of a butterfly. This kind of gag is very hard to keep in the wearer; the use