Sexual intercourse (or coitus or copulation) is a sexual activity typically involving the insertion and thrusting of the penis into the vagina for sexual pleasure or reproduction. This is also known as vaginal intercourse or vaginal sex. Other forms of penetrative sexual intercourse include anal sex (penetration of the anus by the penis), oral sex (penetration of the mouth by the penis or oral ...

Sexual harassment is a type of harassment involving the use of explicit or implicit sexual overtones, including the unwelcome and inappropriate promises of rewards in exchange for sexual favors. Sexual harassment includes a range of actions from verbal transgressions to sexual abuse or assault. Harassment can occur in many different social settings such as the …

Sexual and reproductive health (SRH) is a field of research, healthcare, and social activism that explores the health of an individual's reproductive system and sexual wellbeing during all stages of their life.. The term can also be further defined more broadly within the framework of the World Health Organization's (WHO) definition of health―as "a state of complete physical, mental and ...

Child sexual abuse is a form of child abuse in which a child is abused for the sexual gratification of an adult or older adolescent. It includes direct sexual contact, the adult or otherwise older person engaging indecent exposure (of the genitals, female nipples, etc.) to a child with intent to gratify their own sexual desires or to intimidate or groom the child, asking or pressuring a child ...

Monogamous mating. Monogamy is defined as a pair bond between two adult animals of the same species – typically of the opposite sex. This pair may cohabitate in an area or territory for some duration of time, and in some cases may copulate and reproduce with only each other. Monogamy may either be short-term, lasting one to a few seasons or long-term, lasting many …

Sexual conflict or sexual antagonism occurs when the two sexes have conflicting optimal fitness strategies concerning reproduction, particularly over the mode and frequency of mating, potentially leading to an evolutionary arms race between males and females. In one example, males may benefit from multiple matings, while multiple matings may harm or endanger …

Incest (/ ˈ ɪ n s ɛ s t / IN-sest) is human sexual activity between family members or close relatives. This typically includes sexual activity between people in consanguinity (blood relations), and sometimes those related by affinity (marriage or stepfamily), adoption, or lineage.It is strictly forbidden and considered immoral in most societies, and can lead to an increased risk of …

Genital-genital rubbing, or GG rubbing, among non-human animals is sexual activity in which one animal rubs his or her genitals against the genitals of another animal. The term GG rubbing is frequently used by primatologists to describe this type of sexual intimacy among female bonobos, and is stated to be the "bonobo's most typical sexual ...

William Henry Cosby Jr. (/ ˈ k ɒ z b i / KOZ-bee; born July 12, 1937) is an American stand-up comedian, actor, and author.Cosby began his career as a stand-up comic at the hungry i nightclub in San Francisco during the 1960s. Throughout the decade, he released several standup comedy records which consecutively earned him the Grammy Award for Best Comedy Album from …

Parental investment theory is a branch of life history theory.The earliest consideration of parental investment is given by Ronald Fisher in his 1930 book The Genetical Theory of Natural Selection, wherein Fisher argued that parental expenditure on both sexes of offspring should be equal. Clutton-Brock expanded the concept of parental investment to include costs to any …