Use of the agreed safeword is seen by some as an explicit withdrawal of consent. The strategies and tactics that are used to smuggle one of the couple into and out of the toilet undetected are as important or almost as important as the urination. The concept of lesbian, to differentiate women with a shared sexual orientation, is a 20th-century construct. Pornography may fall into more than one genre. The niche popularity grew significantly in the latter half of the first decade of the 2000s. There are number of types of sex parties: Swinger party/gathering A swinger party or partner-swapping party is a gathering at which individuals or couples in a committed relationship can engage in sexual activities with others as a recreational or social activity. On the other hand, the masochist enjoys being hurt, humiliated, or suffering within the consensual scenario. The existence of such content in commercially available pornography is widely considered an urban legend. Normal quantities of ejaculate range from 1.5 to 5.0 milliliters . A sex party is a gathering at which sexual activity takes place. Is also common of the furry genre. It is also known colloquially as gushing or squirting, although these are considered to be different phenomena in some research publications. Fisher said that perhaps, the fleshy, rounded buttocks attracted males during rear-entry intercourse. Tentacle erotica can be consensual, but frequently contains elements of non-consensual sex. The prostate gay sex gland is one of the organs that contributes fluid to semen. Diaper pornography involves performers wearing diapers, sometimes with an adult performer acting in the role of a caretaker. Clothed male, naked female is one-sided female nudity in which one or more females are nude while one or more men are clothed. In 1988, a sex tape caused significant damage to Rob Lowe career. For legal reasons, the vast majority of so-called reality porn involves professional actors and actresses posing as so-called amateurs.