Top, bottom and versatile

In human sexuality, top, bottom and versatile are sex positions during sexual activity, especially between two men. A top is usually a person who penetrates, a bottom is usually one who receives penetration, and a versatile engages in both activities or is open to engaging in either activity. These terms may be elements of self-identity that indicate an individual's usual preference, but might also describe broader sexual identities.

Top, bottom and versatile are also used in BDSM to describe similar—but distinct—BDSM identities and practices.

A top is usually a person who engages in the penetrative role during sexual activity; for men who have sex with men (MSMs), this often involves penetration using the penis during anal or oral sex.Top is also used as a verb meaning "to penetrate another". Top may also describe a broader personal identity involving dominance in a romantic or sexual relationship; however, this stipulation is not a requisite element of being a top.

Several related terms exist. With regard to gay male sexuality, a total top is one who assumes an exclusively penetrative role for sex. A power top is one noted for their great skill or aggressiveness in topping. A service top is "one who tops under the direction of an eager bottom". A versatile top is one who prefers to top but who bottoms occasionally. The terms penetrative partner or giver are synonyms of top, created to describe the act of penetrating without implying non-egalitarian relations among participants.

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