The ability to control the external sphincter becomes very important when the internal one decides it’s time to evacuate and you’re not in a position to accommodate that requirement. Sometimes, the material can be loose enough that it confuses the little nerve, however, and when you think you need to fart, you find yourself with quite the messy surprise. However, if it senses a solid material, it’s a different story it will attempt to keep the material in until you relax the external sphincter. So, if you’re needing to fart, for example, the muscle will allow you to relax it a bit so the air can be discharged. It has a little nerve embedded in it that can sense what’s trying to exit. All kidding aside, it is designed to prevent unintentional emission of materials from your rectum. It exists primarily to keep you from shitting yourself. This muscle is involuntary and you typically have little control over it (though it is possible to train yourself to exert control over it). There’s the external sphincter, which is a voluntary muscle – you can relax and tighten it up at will. This will be an important point to understand as we discuss techniques for preparing to be sodomized in the upcoming modules. These muscles are known as sphincters, and are oriented such that it is much easier for objects inside to get out as opposed to allowing external objects to enter. The anus is surrounded by a muscle, or rather two sets of muscles, that hold the opening closed. The anus (butthole, asshole, shithole) is the hole surrounded by the wrinkled, rosebud looking muscle where feces exits and the various tongues, fingers, toys, penises, and other items you’ll use for pleasure will make contact and/or enter. So for the time being let’s jump right into examining the butthole and the rectum. Those will be discussed at the appropriate time, however. If you get involved in some of the more elaborate activities like prostate play with a male, or fisting of the anus, other parts of the internal anatomy will be involved. With that in mind, there are two primary pieces of the human anatomy involved in butt sex, the anus and the rectum. This not only reduces a slut’s sexual skill set markedly, but also eliminates one major avenue of play that can dramatically increase the enjoyment and breadth of a total sexual experience for those who no longer wish to partake in it.Īs with any other sexual activity, the more you know and understand how the parts work, the easier it is to prepare for play involving those parts, and to enjoy it when you do engage in it. A lot of people, women especially, have less than ideal experiences in their first anal encounters, however, largely from inadequate preparation (mental or physical). This often results in years of not wanting to try anything involving butt play again. Anal sex play can be very pleasurable, especially if you prepare for it the right way.