Anal sex

Anal sex or anal intercourse is a commonly practiced form of human sexual behavior in some cultures. It involves the anus (or rectum), especially, but not limited to, the insertion of the erect penis into the rectum through the anus. The use of sex toys and other activities involving the anus and rectum may be considered anal sex as well. Anal sex can be pleasurable for both the insertive partner and the receptive partner, as the anus contains many of the same kinds of nerves as the penis or clitoris (it can also be unpleasurable for both partners, especially if performed forcefully or without lubrication).

Positions

Various positions are possible in anal sex, including:

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• Missionary anal - Although very seldom depicted in erotic movies because it blocks the view of the penetration, this may be a very common position in real life. The bottom partner lies flat and face down, legs together. After the preparations and relaxations described above, the top person will sit astride the bottom person with the top person's penis or sex toy pointed at the bottom person's anus. Slow, gentle penetration can then begin, after which the top person also lies flat entirely on the bottom person's body. This position is very familiar from other kinds of sex, allows the top partner to feel the curve and shape of the bottom partner's buttocks, and somewhat minimizes the depth of penetration which may be more comfortable for the bottom partner.
• Doggy style - This position maximizes the depth of penetration, which may be desirable by the top and/or bottom partners, but poses the risk of pushing against the sigmoid colon. If the bottom person is a male, this position increases the chances of stimulating the prostate. This position makes easier a more vigorous thrusting action.
• Spooning - The partners lie on their sides, facing the same direction, with the top's lubricated penis or toy touching the outside of the bottom's anus. This allows the bottom partner to greatly control initial entry and the depth, speed and force of subsequent thrusting.
• Face to face - The bottom partner lies on her or his back, legs in the air. This can be easier if the bottom person is on a bed or table and the top person is standing on the floor.
• Reverse cowboy/cowgirl
• Froggy style