In addition, the lower bowel above the rectum is easily perforated. For this reason, butt plugs tend to be shorter than dildos, and their marked size generally indicates the circumference of the device rather than the length. They must also be very smooth to avoid damaging the rectum or bowel. In order to get them into the rectum, they most commonly have a general profile of a round-ended cone which then narrows to a "waist" which locates itself at the anal sphincter, with the flared part outside the body, preventing the butt plug from slipping further into the body. The sphincter muscle will hold the plug in place by the waist, preventing the plug from slipping out unintentionally.
As with other activities involving anal penetration, such as anal sex, large amounts of sexual lubricant and a slow gentle approach are needed to insert or remove a butt plug.
Butt plugs are sometimes used covered by condoms for hygiene, and to allow for the easy disposal of any feces with which they may come into contact. Nevertheless, they should not be shared with other people, due to the risk of blood-borne diseases, including HIV that can arise from the transfer of body fluids from one person to another. A butt plug isn't necessarily confined to only anal stimulation; butt plugs may be used in any orifice in which insertion is physically possible.
DesignsButt plugs come in a variety of colors, shapes, sizes, and textures. Some are designed to look like penises, while some are ribbed or wavy. The majority, however, are shaped as shown in the picture above, having a thin tip which is wider in the middle, a notch to hold it in place once it is inserted, and a flared base to prevent complete insertion into the rectum. Some plugs are designed (long, flexible and curved) to penetrate the sigmoid colon.
Butt plugs are made of a variety of materials, the most common being latex. Other materials used include silicone, neoprene, wood, metal, glass, stone, and many other materials. Silicone is a particularly good material, as it can be disinfected in boiling water.
There are butt plugs that "ejaculate" by squirting water or other viscous fluids into the rectum. There are also vibrating butt plugs, and butt plugs that can inflate and expand. Some butt plugs are specifically designed for men and stimulate the prostate. Other butt plugs are manufactured with long hair or simulated animal tails attached to the base for use in human pony play or other animal fantasy role play. Butt plugs are also now available that incorporate electro-stimulation.
Butt plugs can be moved in or out for pleasure; for this type of activity ribbed butt plugs can increase pleasure. They can also be worn continuously (or be lockable) for long periods of time.
Anal jewelry is a type of butt plug where the bulbous end is inserted into the anus and the end that remains outside of the body is decorated. Most anal jewelry pieces are made of stainless steel and typically have some kind of gem or ornate sculpture on the area that is to be worn outside of the body. These stainless steel pieces are also designed to be worn for an extended amount of time; although they provide a feeling of fullness in the anus, they are more for show than for pleasure.
RisksThe flange isn't a foolproof method of preventing the plug from entering the rectum completely with subsequent inability to retrieve it. This is uncomfortable and may require medical intervention. Butt plugs of excess diameter can, especially when inserted too rapidly, and / or too forcefully, lead to sphincter tear, detachment or other rectal failure. Kegel exercises can help maintain normal, healthy sphincter function.
Generally for optimal pleasure, when inserting a butt-plug, one should focus attention on manipulative gentleness, progressive sizing and cautious patience.
Reprinted with permission of www.private-shades and injunction with Wikipedia