Anal sex is penetration of the anus. In heterosexual relationships it has been traditionally used in some cultures as a form of contraception, and of preserving vaginal virginity prior to marriage.
Found on http://www.probertencyclopaedia.com/browse/AA1.HTM
Anal sex (also called anal intercourse) is the sex act in which the penis is inserted into the anus of a sexual partner. The term can also include other sexual acts involving the anus, including pegging, anilingus, fingering, and object insertion. While anal sex is commonly associated with male homosexuality, research shows that not all gay males
Found on http://en.wikipedia.org/wiki/Anal_sex
Sexual activity in which the penis is inserted into the anus. Anal sex during pregnancy is usually safe as well. However, if you have hemorrhoids, remember that they tend to become larger during pregnancy. If your hemorrhoids are bleeding and you have anal sex, you can lose a considerable amount of blood, which can endanger both mother and baby. N.
Found on http://www.pregnology.com/AZ/A/6
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