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Human sex ratio
...In anthropology and demography, the human sex ratio is the sex ratio for Homo sapiens . Like most sexual species, the sex ratio is approximately 1:1. In humans the secondary sex ratio is commonly ...
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Safe sex
...Safe sex is defined as "Sexual activity engaged in by people who have taken precautions to protect themselves against sexually transmitted diseases such as AIDS." This is also referred to as safer ...
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Anal sex
...Anal sex most often refers to the sex act involving insertion of the penis into the anus. The term anal sex can also sometimes include other sexual acts involving the anus, including Anal–oral sex ...
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Same-sex relationship
...A same-sex relationship can take one of many forms, from romantic and sexual, to non-romantic close relationships between two persons of the same gender. The term same-sex relationship may be used ...
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Group sex
...Group sex is sexual behaviour involving more than three participants at the same time. The main focus of this page is group sex among humans, however group sex also occurs in other animal species ...
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LGBT rights in Brazil
...Lesbian, gay, bisexual, and transgender persons in Brazil may face legal challenges not experienced by non-LGBT residents. Both male and female same-sex sexual activity are legal in Brazil, but same ...
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Recognition of same-sex unions in Russia
...Russia recognizes neither same-sex marriages nor any other form of civil union for same-sex couples. However, gay activists claim that a same-sex marriage contracted abroad can legally be recognized ...
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Same-sex marriage
...Same-sex marriage is a legally or socially recognized marriage between two persons of the same biological sex or social gender. Same-sex marriage is a civil rights, political, social, moral, and ...
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Sex doll
...A sex doll is a type of sex toy in the size and shape of a sexual partner for aid in masturbation. The sex doll may consist of an entire body with face, or just a pelvic part, with the accessories ...
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Sex shop
...A sex shop, erotic shop is a shop that sells products such as sex toys, pornography, erotic lingerie, erotic books, and safe sex products such as condoms and dental dams. The euphemisms "Adult Video ...
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