The term BDSM dates back to 1969; however, the origin of the term BDSM is unclear and is believed to have been formed either from joining the term B&D with S&M , or as a compound initialism from B&D, D&S , and S&M. It contains graphic sexual activity and visible penetration. Some aspects of the research community distinguish between female ejaculation and what is colloquially known as squirting or gushing. Interactive pornography, available in CD-ROM and DVD format, allows the viewer to select the particular acts performed at any one time, sometimes with the camera providing a first person view. If one person is penetrated by two objects, it is generically called double penetration naked milf . Often other friends and community members may witness the signing of such a document in a ceremony, and so parties violating their agreement can result in loss of face, respect or status with their friends in the community. In humans, females generally have gay sex video more round and voluptuous buttocks, caused by estrogen that encourages the body to store fat in the buttocks, hips, and thighs. Lolita pornography caters to ephebophiles. John Stagliano is considered to have started the gonzo pornography genre with his Buttman series of films. In Japanese, the term describes any type of perverse or bizarre sexual desire or act; it lesbian hentai does not represent a genre of work. In POV porn, the shooting style is generally similar to gonzo pornography, with the person receiving sexual gratification holding the camera him or herself—aiming it down at the actress or actor who is performing the sex act. The term pearl necklace is used by some because the drops of semen deposited by the man resemble a necklace of translucent white pearls. Biological anthropologist Helen B. People may experience pleasure from anal sex by stimulation of the anal nerve endings, and orgasm may be achieved through anal penetration – by indirect stimulation of the prostate in men, indirect clitoral/G-spot stimulation in women, and associated sensory nerves .
