Penetrative sex

Sexual penetration is the insertion of a body part or other object into a body orifice, such as the vagina, anus or mouth, as part of human sexual activity or animal sexual behavior.

Though it is a natural part of sexual activity, sexual penetration is unlawful in some circumstances. Sexual penetration is a medical term, but it is most commonly used in statute law in relation to unlawful sexual acts. Some jurisdictions use the term sexual penetration, while others use terms such as sexual intercourse or carnal knowledge. Other jurisdictions refer to some forms of penetration as "acts of indecency", or other terminology. Many modern criminal statutes use the term sexual penetration when referring to unlawful sexual acts because it is a broad term encompassing (unless otherwise qualified) any form of penetrative sex, including digital or with an object, and may involve only the most minimal penetration.

When a man inserts his penis into a woman's vagina, it is generally called vaginal or sexual intercourse. When a penis penetrates another person's anus, it is called anal sex or anal intercourse. Penetrative oral sex may involve penetration of the mouth by a penis (fellatio) or the use of the tongue to penetrate a woman's vagina or vulva (cunnilingus). The tongue may also penetrate the anus during anilingus, which is a form of oral and anal sex. If one or more fingers are used to penetrate an orifice, it is called fingering or digital penetration. The insertion of an object, such as a dildo, vibrator or other sex toy, into a person's genital area or anus may also be considered sexual penetration.

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