Types of anal sex can also be a part of lesbian sexual practices. Femdom features BDSM scenes in which the dominant partner is female. Irrespective of the legal or social view of pornography, it has been used in a number of contexts. Mutual masturbation, mutual manual stimulation of the genitals between partners, hentai movies can be a substitute for sexual penetration. Other fetish Bareback pornography features performers who lesbian milfs are not wearing condoms. The term combines elements of the Freudian psychoanalytic fetish and the Marxist commodity fetish, and is used in the context of British, Spanish and French colonialism and imperialism and their aftereffects. A sex party is a gathering at which sexual activity takes place. Voyeur pornography may also include shots of topless women on topless beaches who are unaware of the cameras but may legally be photographed due to the public setting. In humans, females generally have more round and voluptuous buttocks, caused by estrogen that encourages the body to store fat in the buttocks, hips, and thighs. Group gay twinks sex most commonly takes place in a private sex party or semi-public swinger gathering, but may also take place at massage parlors or brothels or, in some jurisdictions, at purpose-built locations such as sex clubs. Mammary intercourse is known as titty-fucking, titfuck, or a titjob in the United States, as well as tit wank or French fuck in the United Kingdom - the latter term dating back to the 1930s; while a more jocular equivalent is a trip down mammary lane. A bisexual threesome may involve a man having sex with a man and a woman, the woman having sex with a man and a woman, or all three having sex with each other. Oral sex pornography frequently features a person performing fellatio, and less frequently cunnilingus. Fisher said that perhaps, the fleshy, rounded buttocks attracted males during rear-entry intercourse. Normal quantities of ejaculate range from 1.5 to 5.0 milliliters . Lolicon and its contribution to the controversy regarding the regulation of pornography of depicting minors that don’t exist has been a major issue for free speech in and outside of Japan.