For many years a relatively little known activity has become progressively more popular among heterosexual partners.  More commonly referred to "strap-on" sex it deals with the female's penetration of the male, specifically the anus. More widely considered to be a part of the fetish realm, strap-on sex (a.k.a. "pegging") has captured the imagination and curiosity males as well as females. To be sure, even now relatively few couples incorporate the strap-on into their intimate repertoire. Strap-on sex provides an entirely novel experience, in which the male assumes a submissive role. The female may find it appealing to take a dominant role, with the opportunity satisfy herself of what it might be like to have a penis. It is indeed a role reversal, physiological and on an emotional level.  Although a surprising number of males are curious and may secretly fantasize about this experience, most would never act upon the desire for fear of homosexual implications. For those undaunted individuals who might seriously consider engaging in "Strap-on" sex, we've attempted to provide a helpful guide to allow you to pursue your secret desire. The following items are necessary accoutrements to engage in strap-on sex: the female partner will need to be fitted with a strap-on harness, as well as an insertable dildo. Dildo's are available in  phallic or simple spike shapes, which may be preferable to the male. The harness will need to be sufficiently secure, so that the female will have her hands free to engage in other activities. Regardless of dildo's shape it's a good idea to choose a smaller diameter initially, before moving up to a larger size. A water based quality lubricant, latex gloves and a means of cleansing (anal douche or similar) are also required. Prior to engaging in any anal activity the male must be spotlessly clean. The best way to be sure that this is so, is by cleansing the rectum with an anal douche. It's not recommended to use a full enema for this purpose since a more copious amount of liquid may yield undesirable results. The objective is to cleanse the rectum, but not the colon. Click on any of the following images to enlarge. The female may begin by first relaxing her partner, stroking stroking and teasing the buttocks as well as the scrotum and testicles.  Be sure to penetrate the anus gradually. The anus orifice should never be poked or prodded in a hap-hazard manner. Using a latex glove apply gentle, firm pressure against the orifice with a well lubricated middle finger. Using the pad of the middle finder push firmly against the orifice. It may be desirable to rub the finger against the anus in a tight circular motion. The anal orifice is packed with thousands of nerve receptors which make it very sensitive to touch and easy to stimulate.   Once the sphincter muscles have relaxed it will be possible to slide the finger inside without exerting too much pressure. A receptive anus will actually "draw in" the finger, which is a sign that the anus is becoming more comfortable. The fully inserted the finger may now be rotated in a cork-screw fashion. The finger may be pushed in and pulled out, but never beyond the sphincter muscles. Do not withdraw the finger entirely and then attempt to push it back in. Hold the dildo in your hand and apply a generous amount of lubricating jelly (not oil) along the shaft. Apply the same jelly to the anal orifice. There can never be too much lubrication. Inserting the dildo should done in a similar manner to inserting a finger (which had been described previously). Although the  dildo is larger than a finger, the anal orifice should be dilated to some degree by now. If insertion proves difficult do not attempt to force the dildo inside, but rather use a finger to digitally relax the anus more thoroughly. Once the dildo has been permitted to enter the anus, continue to push, but very slowly. Initially it's best to push in small increments. Be sure to verbally communicate with your partner and to reassure him that you will enter only as far as he feels comfortable. Initially this may not be all the way. Slowly begin to withdraw the dildo, but do not pull it out entirely. It is more comfortable for the male if some portion of the dildo remains inside him the entire time. Begin "riding your partner", while grasping his hips. You may repeatedly push in and withdraw (although not completely). An alternative is to remain motionless, while the male partner pushes backwards into you. The latter allows the male to chose the depth, speed and rhythm of the penetration. If you choose to rhythmically thrust, do not use a fast motion. A speed similar to that used during intercourse is generally too fast for anal penetration. It's not desirable to attempt to emulate what might be observed in adult movies.