Non-penetrative sex or outercourse is sexual activity which does not include sexual penetration, such as the penetrative aspects of vaginal, anal or oral sexual activity. The physical intimacy includes various forms of sexual and non-sexual activity, such as frottage, mutual masturbation, kissing or cuddling.
Non-penetrative sex may be used as an alternative to penile-vaginal penetration, the aim may be to preserve virginity or to prevent pregnancy. Some couples engage in non-penetrative sex as part of foreplay, and it is often considered a form of safer sex and birth control, as it is less likely that bodily fluids are exchanged.
Heavy petting 
Frottage is the act of rubbing any part of the body, including the buttocks, the breasts, abdomen, thighs, feet, hands, legs, and sexual organs against a partner or partners, whether naked or clothed (more commonly known as dry humping or dry sex), without penetration. Frottage can include genital-genital contact, sometimes called genito-genital or GG rubbing, and most of the other forms of non-penetrative sex.
Couples may engage in frottage as a form of foreplay, as a method to achieve sexual gratification without the more sexually explicit oral, vaginal, or anal sexual intercourse, which may be a way of preserving virginity, or as a form of safe sex. Often, young people will engage in frottage as an earlier stage of physical intimacy before more explicit contact is desired, or as a substitute to penetration.
Some modern dance styles involve partners rubbing against each other. Such dance styles include lap dances, "grinding", "freaking", dubbing or "sandwich dancing". This is sometimes referred to in Spanish as "perrear" ("dogging"), a term that came from Puerto Rico and later became the famous dance for reggaeton.
Other terms associated with frottage are:
- Scrumping – A colloquialism for dry humping and portmanteau of "scratching" and "humping"
- Princeton rub, Ivy League rub, and so on are slang terms referring to male-male frot or interfemoral intercourse or both, presumably surviving from the days when these colleges only admitted men. W. H. Auden was proud of having been the first person to use the terms "Princeton rub" and "Princeton first-year" in print.
The term "frottage" derives from the French verb frotter (i.e., to rub). Three terms derive from frotter. These include frottage, the sexual act involving rubbing; frot, the sexual act that refers exclusively to male-male genital rubbing without penetration (but may also be called frottage); and frotteurism, a paraphilia involving obsession with frottage or performing frottage non-consensually (e.g., pressing one's genitals against a stranger on a crowded subway); this was once called "frottage," but the usage is no longer acceptable.
Mutual masturbation 
Mutual masturbation (also called manual intercourse) involves the manual stimulation of genitals by two or more people who stimulate themselves or one another. This may be done in situations where the participants do not feel ready, physically able, socially at liberty, or simply willing to have full sexual intercourse but still wish to have a mutual sexual act. It is also done as part of the full repertoire of sexual intercourse, where it may be used as an interlude, as foreplay or simply as an alternative to penetration. For some, it is the primary sexual activity of choice above all others.
Mutual masturbation might result in one or more of the partners achieving orgasm. If no bodily fluids are exchanged (as is common), mutual masturbation is a form of safe sex, and greatly reduces the risk of transmission of sexual diseases. As such, it was encouraged among gay men by some safer sex organizations in the wake of the AIDS outbreak of the 1980s, as an alternative to anal or oral sex.
In partnered manual genital stroking to reach orgasm or expanded orgasm, both people focus on creating and experiencing an orgasm in one person. Typically, one person lies down pant-less, while his or her partner sits alongside. The partner who is sitting uses his or her hands and fingers (typically with a lubricant) to slowly stroke the clitoris or penis and genitals of the partner. Expanded orgasm as a mutual masturbation technique is said to create orgasm experiences more intense and extensive than what can be described as, or included in the definition of, a regular orgasm. It includes a range of sensations that include orgasms that are full-bodied, and orgasms that last from a few minutes to many hours. The term was coined in 1995 by Patricia Taylor. However, this technique is not without risk of contracting STDs, in particular HIV. A person using his or her finger, with a small wound, to stimulate a woman's genitals could be infected with HIV found in her vagina's fluids; likewise regarding a man's semen containing HIV which could infect a partner who has a small exposed wound on his or her skin.
Exclusively non-penetrative 
- Axillary intercourse
- (slang: "bagpiping", in reference to the underarm manner in which bagpipes are played; "directing traffic", or "pit-wank", a variant of the term "tit-wank", are also terms for axillary intercourse) a sexual variant where the penis is inserted in the other person's armpit.
- Erotic massage
- rubbing all over, with or without oil.
- stimulating genitals with the feet.
- penis-to-penis rubbing.
- stimulating the penis with the hand.
- Intercrural sex
- (also known as interfemoral intercourse) type of irrumation, where one partner places a phallic object or penis between the other partner's thighs.
- Intergluteal sex
- when one partner places a phallic object or penis into the other partner's buttock cleavage or gluteal cleft.
- Mammary intercourse
- when one partner rubs a phallic object or penis between the partner's breasts.
- Stimulation of nipples
- stimulating the nipples, usually orally or manually.
- type of stimulation of male genitals popular in Japanese brothels: the woman rubs the man's penis with her hands, thighs and labia majora.
- vulva-to-vulva rubbing, commonly known by its "scissoring" position.
Non-exclusively non-penetrative 
- stimulating the vulva/vagina or anus with the fingers.
- Oral sex
- stimulation of the genitalia by the use of mouth, lips, tongue, teeth or throat.
Pregnancy risk 
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Interfemoral intercourse and genital rubbing, although notionally forms of non-penetrative sex, can carry a risk of pregnancy through transfer of the sperm-bearing fluids to the sex organs.
See also 
- M., Hodge; Evelyn Blackwood, Jeffrey M. Dickemann, Doug Jones, Frank Muscarella, Paul L. Vasey, Walter L. Williams (2000). "The Evolution of Human Homosexual Behavior". Current Anthropology: 385. ISBN 1-0768-88-1 Check
- Jerry D. Durham, Felissa R. Lashley (2000). The person with HIV/AIDS: nursing perspectives. Springer Publishing Company. pp. 597 pages. ISBN 0826112935, 9780826112934 Check
|isbn=value (help). Retrieved January 29, 2012.
- Kate Havelin (1999). Dating: "What Is a Healthy Relationship?". Capstone Press. p. 64. ISBN 0736802924.
- Isadora Alman (2001). Doing It: Real People Having Really Good Sex. Conari. p. 280. ISBN 1573245208.
- Bryan Strong, Christine DeVault, Theodore F. Cohen (2010). The Marriage and Family Experience: Intimate Relationship in a Changing Society. Cengage Learning. pp. 615 pages. ISBN 0534624251, 9780534624255 Check
|isbn=value (help). Retrieved October 8, 2011.
- Laura M. Carpenter (2005). Virginity lost: an intimate portrait of first sexual experiences. NYU Press. pp. 295 pages. ISBN 0814716520, 9780814716526 Check
|isbn=value (help). Retrieved October 9, 2011.
- "Sexual Risk Factors". aids.gov. Retrieved March 4, 2011.
- Piepenburg, Erik (February 2006). "What's Rub Got to Do With it?". Out. Retrieved July 4, 2011.
- Carpenter, Humphrey (1981). W. H. Auden, a biography, Volume 1981, Part 1. Houghton Mifflin Co. p. 48. ISBN 0395308534.
- Joe Perez (2006). Rising Up. Lulu.com. p. 248. ISBN 1411691733, 9781411691735 Check
|isbn=value (help). Retrieved July 4, 2011.
- Eccentric and Bizarre Behaviors, Louis R. Franzini and Jon Squires, 1995.
- Fulbright, Yvonne K. (2010). The Better Sex Guide to Extraordinary Lovemaking. Quiver. p. 141. ISBN 9781592333523.
- Alan Brauer & Donna Brauer (1991). The ESO Ecstasy Program: Better, Safer Sexual Intimacy and Extended Orgasmic Response. Warner Books. pp. 24–25. "Masters in Johnson … described female orgasm as "a brief episode of physical release" characterized by either "a series of rapidly recurrent orgasmic experiences between which no recordable plateau-phase intervals can be demonstrated or by a single, long-continued orgasmic episode… status orgasmus is may last from 20 to more than 60 seconds""
- Patricia Taylor, PhD thesis (2000), In her PhD research study, the average time spent in an EO session was 54 minutes.
- Morton, Mark Steven (2003). The Lover's Tongue: A Merry Romp Through the Language of Love and Sex. Insomniac Press. p. 186. ISBN 1894663519.
- axillary intercourse - Dictionary of sexual terms
- Constantine, Peter. Japan's Sex Trade: A Journey Through Japan's Erotic Subcultures. Tokyo: Yenbooks, 1993, p. 75. ISBN 9784900737006.
Further reading 
- Ann van Sevenant (2005). Sexual Outercourse: A Philosophy of Lovemaking. Peeters. p. 249. ISBN 9042916176.
- Ian Kerner (2004). She Comes First: The Thinking Man's Guide to Pleasuring a Woman. HarperCollins. p. 240. ISBN 0060538252.
|Wikimedia Commons has media related to: Mutual masturbation|
- Frot Man2Man Alliance promoting non-penetrative male-to-male sexual expression
- "Great sex without intercourse", NVSH (contains graphics of sexual acts)
- Mutual Masturbation - A biographical collection of personal data for a psychological and sociological study of mutual masturbating as it relates to the habits for both men and women.
- Clitical.com: Mutual Masturbation Female mutual masturbation