BDSM in the context of Sexual behaviour

Human sexual activity, human sexual practice or human sexual behaviour is the manner in which humans experience and express their sexuality. People engage in a variety of sexual acts, ranging from activities done alone (e.g., masturbation) to acts with another person (e.g., sexual intercourse, non-penetrative sex, oral sex, etc.) or persons (e.g., orgy) in varying patterns of frequency, for a wide variety of reasons. Sexual activity usually results in sexual arousal and physiological changes in the aroused person, some of which are pronounced while others are more subtle. Sexual activity may also include conduct and activities which are intended to arouse the sexual interest of another or enhance the sex life of another, such as strategies to find or attract partners (courtship and display behaviour), or personal interactions between individuals (for instance, foreplay or BDSM). Sexual activity may follow sexual arousal.

Human sexual activity has sociological, cognitive, emotional, behavioural and biological aspects. It involves personal bonding, sharing emotions, the physiology of the reproductive system, sex drive, sexual intercourse, and sexual behaviour in all its forms.

A sex toy is an object or device that is primarily used to facilitate sexual pleasure, such as a dildo, artificial vagina or vibrator. Many popular sex toys are designed to resemble human genitals, and may be vibrating or non-vibrating. The term sex toy can also include BDSM apparatus and sex furniture such as sex swings; however, it is not applied to items such as birth control, pornography, or condoms. Alternative terms for sex toy include adult toy and the dated euphemism marital aid. Marital aid also has a broader meaning and is applied to drugs and herbs marketed to enhance or prolong sex.

Sex toys are most commonly sold at sex shops or online, but they may also be sold in a pharmacy or chemist store, a pornographic store, a head shop, or a department store. Sex toys are available in almost all countries for males and females.

The sex industry, also called the sex trade, consists of businesses that either directly or indirectly provide sex-related products and services or adult entertainment. The industry includes activities involving direct provision of sex-related services, such as prostitution, strip clubs, host and hostess clubs, and sex-related pastimes, such as pornography, sex-oriented men's magazines, women's magazines, sex movies, sex toys, and fetish or BDSM paraphernalia. Sex channels for television and pre-paid sex movies for video on demand, are part of the sex industry, as are adult movie theaters, sex shops, peep shows, and strip clubs. The sex industry employs millions of people worldwide, mainly women. These range from the sex worker, also called adult service provider (ASP), who provides sexual services, to a multitude of support personnel.

A whip is a blunt weapon or implement used in a striking motion to create sound or pain. Whips can be used for flagellation against humans or animals to exert control through pain compliance or fear of pain, or be used as an audible cue through the distinct whipcrack effect. Whips are commonly used on horses to give subtle cues as tapping. The portion used for striking is generally either a firm rod designed for direct contact, or a flexible line requiring a specialized swing. The former is easier and more precise, the latter offers longer reach and greater force. Some varieties, such as a hunting whip or lunge whip, have an extended stock section in addition to the line.

Whips such as the "cat o' nine tails" and knout are specifically developed for corporal punishment or torture on human targets. Certain religious practices and BDSM activities involve the self-use of whips or the use of whips between consenting partners. Misuse on animals may be considered animal cruelty, and misuse on humans may be viewed as assault.

Leather subculture denotes practices and styles of dress organized around sexual activities that involve leather garments, such as leather jackets, vests, boots, chaps, harnesses, or other items. Wearing leather garments is one way that participants in this culture self-consciously distinguish themselves from mainstream sexual cultures. Many participants associate leather culture with BDSM practices and its many subcultures. For some, black leather clothing is an erotic fashion that expresses heightened masculinity or the appropriation of sexual power; love of motorcycles, motorcycle clubs and independence; and/or engagement in sexual kink or leather fetishism.

Sadism (/ˈseɪdɪzəm/ ) and masochism (/ˈmæsəkɪzəm/), known collectively as sadomasochism (/ˌseɪdoʊˈmæsəkɪzəm/ SAY-doh-MASS-ə-kiz-əm) or S&M, is the derivation of pleasure from acts of respectively inflicting or receiving pain or humiliation. The term is named after the Marquis de Sade, a French author known for his violent and libertine works and lifestyle, and Leopold von Sacher-Masoch, an Austrian author who described masochistic tendencies in his works. Though sadomasochistic behaviours and desires do not necessarily need to be linked to sex, sadomasochism is also a definitive feature of consensual BDSM relationships.

Sadomasochism was introduced in psychiatry by Richard von Krafft-Ebing and later elaborated by Sigmund Freud. Modern understanding distinguishes consensual BDSM practices from non-consensual sexual violence, with DSM-5 and ICD-11 recognizing consensual sadomasochism as non-pathological. S&M can involve varying levels of pain, dominance, and submission, practiced by individuals of any gender, often within negotiated roles of sadist, masochist, or switch. Forensic and medical classifications focus on consent and harm.

Sexual activity, sexual practice, sexual behaviour or very broadly sex is the set of activities people engage in that typically includes any combination of physical intimacy, physical contact with the reproductive organs (genitals) or erogenous zones, and erotic stimulation. Sexual acts range from activities done alone (e.g., masturbation) to acts with another person (e.g., sexual intercourse, non-penetrative sex, oral sex, etc.) or multiple persons (e.g., orgies) in varying patterns of frequency, for a wide variety of reasons. Sexual activity usually results in sexual arousal and physiological changes in the aroused persons, some of which are pronounced while others are more subtle. Certain conduct is intended to arouse the sexual interest of another or enhance one's already-existing sex life with another or between individuals (for instance, foreplay or BDSM).

Certain activities, such as strategies to find or attract partners (flirting, courtship and display behaviour), are not usually considered sex, though they are commonly used to lead to sexual arousal and more explicitly sexual activities.