Individuals are also sometimes abbreviated when referred to in writing, so a dominant person may be gay cock referred to as a Dom for a man, and a Domme for a woman. Since at least 1973, it has also been used to refer to a sexually attractive young woman. A pearl necklace is a slang term referring to a sexual act in which a man ejaculates semen on or gay hentai near the neck, chest, or breast of another person. A facial is a form of non-penetrative sex, though it is generally performed after some other means of sexual stimulation, such as vaginal sex, anal sex, oral sex or masturbation. Actual spying may violate privacy and/or trespassing laws in many countries. See Gay-for-pay. Mammary intercourse is said by Alex Comfort to produce mutual orgasm in women with sensitive breasts , and it was one of the nine substitute exercises for penetrative sexual activities, as detailed in the Paradis Charnels of 1903. Celebrity sex tapes are amateur or professionally-made recordings of sex acts, as performed by a celebrity and their naked milf partner. The padding may also muffle noises from the outside, causing a relaxation effect and heightening their other senses. Transsexual pornography features transwomen performers, who typically have male genitalia and augmented female breasts . Sometimes special furniture is used, such as a queening stool or smotherbox. They further argue that setting a discrete line between safe and not-safe activities ideologically denies consenting adults the right to evaluate risks vs rewards for themselves; that some adults will be drawn to certain activities regardless of the risk; and that BDSM play—particularly higher-risk play or edgeplay—should be treated with the same regard as extreme sports, with both respect and the demand that practitioners educate themselves and practice the higher-risk activities to decrease risk. Lucky Pierre is slang for a person performing both receptive and insertive anal and/or vaginal sex simultaneously during a threesome, being positioned between the two partners.