Mammary intercourse describes a sex act, performed as foreplay or as non-penetrative sex, that involves the stimulation of the male penis by the female breasts. Commonly, this sex act involves the man placing his penis in the woman's cleavage and thrusting between her breasts, while the breasts are squeezed around the penis for additional stimulation.

Mammary intercourse can also be combined with fellatio. Researcher Austen Woods, in a study of the condom usage habits of New Zealand's sex workers, said that they offered safe sex alternatives to clients who refused to wear a condom.

Woods quoted a sex worker saying that mammary intercourse was one alternative used, because she claimed it felt to clients like sex without a condom when performed by a woman with large breasts.

It should be noted however that mammary intercourse is not truly safe sex, as some STDs can be transmitted by skin-to-skin contact. When mammary intercourse continues to the point of ejaculation, the semen can land on the breasts, face, or in the mouth of the woman. A slang term for the appearance of semen landing on the woman's upper chest, neck, or shoulders is a "pearl necklace".

Several slang terms refer to mammary intercourse, such as boobjob, titfuck or titty fuck in the United States, as well as tit wank or French fuck in the United Kingdom. The Japanese sex industry uses the term paizuri (from oppai, a slang word for breast).

Intercrural sex (from "inter-" and Latin "crura", legs), also known as femoral/interfemoral sex/intercourse, is a type of intercourse variously regarded as penetrative and non-penetrative sex, in which a male partner places his penis between the other partner's thighs (often with lubrication), and thrusts to create friction. It is therefore a type of Irrumatio.

The sex education and sexual experimentation of adolescents may feature intercrural sex in the interests of avoiding pregnancy or preserving virginity . In 1987 the Shere Hite report on female sexuality found that some adult women reported being able to achieve orgasm through stimulation of the clitoris by the penis, including via intercrural contact. A variation on this practice is known in Japan as sumata.

Intercrural intercourse (termed diamerizein, "to do it between the thighs") was common in the Ancient Greek system of pederasty, where anal sex was considered demeaning to the, usually younger, receiving partner.

The historian K.J. Dover wrote about this extensively in his book Greek Homosexuality (1977), from which current theories on the subject of Greek male-male sexuality are largely derived. Joan Roughgarden refers to standing face-to-face intercrural intercourse as the "gay male missionary position" of ancient Greece in a section of her recent book Evolution's Rainbow that draws heavily on Dover.

Intercrural sex is sometimes known as the "Princeton First-Year". The term may refer to a system by which upperclassmen helped new students assimilate to university life in exchange for sexual gratification. A similar system was present at Oxford University, hence the synonym "Oxford Style". Students at both Oxford and Princeton may have been imitating homosexual practices in ancient Greece, depicted by authors such as Plato and Aristotle.

Intercrural intercourse has been proposed as an important part of the sexual lives of a handful of notable historical figures known or thought to have been homosexual or bisexual. According to his biographer Richard Ellman, Oscar Wilde was introduced to intercrural sex by Robert Baldwin Ross, and it appears to have been his preferred activity, even over oral sex.

Shaka Zulu is speculated to have encouraged intercrural intercourse among his troops to "create intimacy and loyalty". Quotes attributed to the Cynic philosophers regarding Alexander the Great, made both during and after his lifetime, seem to presume intercrural intercourse between Alexander and Hephaestion.

Similarly, comments made by a bed mate about Abraham Lincoln's thighs led to speculation of intercrural intercourse between the two in C.A. Tripp's recent The Intimate World of Abraham Lincoln.

Though some modern Christians and Jews have made the argument that intercrural intercourse is not specifically condemned by Leviticus 18 or 20, it has been subject to various historical sodomy laws and religious restrictions; one of the questions a young man entering confessional during the medieval period would be asked was "Have you fornicated with another male between his thighs? By this I mean, have you ever put your manhood between the thighs of the other, and through vigorous movement ejaculated semen?"

Intercrural intercourse appears to have been common during the medieval era anyway, a contemporary document titled the "Altercatio Ganimedis et Helene" (The Debate of Helen and Ganymede) depicts Greco-Roman mythical figure Ganymede describing the "slippery thighs of a boy" as superior to the "stink and gaping looseness of the female cave".

Intercrural sex is still quite common in some communities. A 1997 report on the sexual health needs of MSM in the Calcutta suburbs found that 73% of men asked engaged in intercrural intercourse, though the frequency varied based on demographic factors: only 54% of sex workers, 50% of lower income men and 40% of Muslims reported intercrural sex; while 82% of Hindus and 88% of middle income men reported engaging in it.

A similar study from South Asia reported that intercrural sex was tied with anal sex as the second most preferred sex act of gay men, making it more popular than oral sex and frot.

Frot is a slang term (ult. from the French verb frotter, "to rub") describing a form of male/male non-penetrative sex, where two men engage in the rubbing of erect penis on erect penis — typically while fully nude and in a frontal embrace that allows simultaneous kissing, and often with a shared understanding that the frot is not merely foreplay to some other type of sex, but will instead continue until both men reach orgasm and ejaculation.


Owing to its non-penetrative character, frot has the safe sex advantage of drastically minimizing transmission of HIV and other infections without the inconvenience and expense of condoms and special lubricants.

Coined sometime in the late 1990s, the word frot (rhyming with "dot") was shortened from the term "frottage" (rhyming with "massage"), a more generic and unisex term for various types of non-penetrative genital rubbing.

Frot can be enjoyable because it mutually and simultaneously stimulates the genitals of both partners as it tends to produce pleasurable friction against the frenulum nerve bundle on the underside of each man's penile shaft, just below the urinary opening of the penis's "head".

An artificial "lube" may be applied before or during frot, and the use of such lubricant may be particularly advisable if one or both of the men is circumcised. Although it's essential to avoid oil-based lubes with latex condoms during any form of penetrative sex, virtually any non-allergenic lubricant is suitable for frot.

Subjectively, fans of frot report that the high degree of "erotic symmetry" inherent to frot can help induce a feeling of "deep sexual connection" without the need for physical penetration, and also bring about a greater sense of emotional intimacy than is suggested by terms such as "mutual masturbation" or "heavy petting."

And many frot advocates assert that this symmetry will also tend to generate a strong sense of shared masculinity and reinforce a feeling of "equal partnership" for a male/male couple.

(More controversially, some "frot radicals" have made the tendentious claim that anal sex between men must necessarily leave the receptive man feeling both emasculated and degraded in comparison to the penetrating man.)

Since frot is a non-penetrative sex act, the risk of passing a sexually transmitted infection (STI) that requires direct contact between the mucous membranes and pre-ejaculate or semen is greatly reduced.

Notably, HIV is among the diseases that require such direct contact, and is therefore very unlikely to be transmitted via frot. On the other hand, frot can potentially provide an "invasion" opportunity for a few pathogenic organisms that need only skin-to-skin contact.

In this category are the viruses causing genital herpes and genital warts, either of which can, in some cases, lead to serious health problems. At the same time, it should be understood that all of these "casually transmissible" diseases are just as likely, if not more so, to be transmitted during male/male anal intercourse as during frot.

Foot fetishism, foot partialism, foot worship, or podophilia is a pronounced sexual interest in feet. It is the most common form of sexual preference for otherwise non-sexual objects or body parts.


Foot fetish has been defined as a pronounced sexual interest in the feet or footwear. Freud considered foot binding as a form of fetishism.

For a foot fetishist, points of attraction include the shape and size of the foot and toes (e.g., long toes, short toes, pointed toes, high arches, slender soles, fat toes, long toenails, short toenails, small feet, toenail color), jewelry, toe rings, ankle bracelets, treatments e.g. French pedicure, state of dress (e.g. barefoot, flip flops, or clad in socks or nylons), odor, and any form of sensory interaction, e.g. licking, kissing, sucking, tickling, person giving foot jobs, pedal pumping or trampling/stomping.

In order to estimate the relative frequency of fetishes researchers at the University of Bologna examined 381 Internet discussions of fetish groups, in which at least 5,000 people had been participating.

Researchers estimated the prevalences of different fetishes based on
(a) the number of discussion groups devoted to a particular fetish,
(b) the number of individuals participating in the groups and
(c) the number of messages exchanged. It was concluded that the most common fetishes were for body parts or for objects usually associated with body parts (33% and 30% respectively).

Among those people preferring body parts, feet and toes were preferred by the greatest number, with 47% of those sampled preferring them. Among those people preferring objects related to body parts, footwear (shoes, boots, etc.) was most preferred (64%).

Some researchers have hypothesized that foot fetishism increases as a response to epidemics of sexually transmitted diseases. In one study, conducted by Dr. A James Giannini at Ohio State University an increased interest in feet as sexual objects was observed during the great gonorrhea epidemic of twelfth century Europe, and the syphilis epidemics of the 16th and 19th centuries in Europe.

In the same study, the frequency of foot-fetish depictions in pornographic literature was measured over a 30 year interval. An exponential increase was noted during the period of the current AIDS epidemic.

In these cases, sexual foot play was viewed as a safe-sex alternative. However, the researchers noted that these epidemics overlapped periods of relative female emancipation. Sexual focus on female feet was also hypothesized to have been a reflection of a more dominant posture of the woman in sexual-social relations. (The first surviving mention of foot fetish is by Bertold of Regensburg in 1220.

A handjob is the manual stimulation of the penis. The manual stimulation of a female's sex organs is usually called fingering, although sometimes "handjob" is used to refer to this act as well.


A handjob may or may not end in ejaculation or orgasm; it may or may not constitute the entire sexual encounter. A handjob may be part of foreplay or part of or a precursor to other sexual activities.

It can provide sexual pleasure to a partner when penetrative intercourse is not possible or desirable. Little physical effort is required for a handjob, and the male is not distracted by the effort of thrusting or the need to stimulate his partner's sexual organs.

A handjob can incorporate a large amount of stimulation and variety and, as with other forms of sexual stimulation, the giving partner can receive significant pleasure and sexual arousal, because they can directly control and observe the sexual excitement and physical reactions of their partner. Handjobs can be enhanced by using oil to lubricate the penis and the hand.

The expression "happy ending" is a colloquial term for the practice of those massage therapists who are also sex workers, offering sexual release to a client. According to a 1975 study by A.J. Velarde, in an unnamed west-coast city in the United States, provision of a "hand job", where the woman gave the client a handjob, was one of the services female masseuses were employed to give.

Subsequent newspaper publicity of this practice caused local councils to impose licensing requirements upon masseuses similar to the ones used on prostitutes. This licensing led to increased expectations in massage parlour clients, who expected that more than a handjob would be available, that is, sexual intercourse.

Because the masseuses themselves considered that they had nothing to lose in acting as prostitutes, and because the local council treated them as prostitutes anyway, masseuses often complied, and thus attracted more prostitution to the city.

While physicians of the period acknowledged that the disorder stemmed from sexual dissatisfaction, they seemed unaware of or unwilling to admit the sexual purposes of the devices used to treat it.


In fact, the introduction of the speculum was far more controversial than that of the vibrator. By the turn of the century, the spread of home electricity brought the vibrator to the consumer market. The appeal of cheaper treatment in the privacy of one’s own home understandably made the vibrator a popular early home appliance.

In fact, the electric home vibrator was on the market before many other home appliance ’essentials’: nine years before the electric vacuum cleaner and 10 years before the electric iron. A page from a Sears catalog of home electrical appliances from 1918 includes a portable vibrator with attachments, billed as ”Very useful and satisfactory for home service.

Erotic massages are typically performed in a person's erogenous zones to achieve or enhance sexual arousal. In the case of women, the two focal areas are the breasts and pubis. In case of men, the focal area is the genitals.

Erotic massage may be utilized as a sex therapy, that is, as a means of stimulating the libido, or increasing the ability of a person to respond positively to sensual stimulus.

In some cases, erotic massage can be a form of foreplay without sexual gratification, intended to heighten the sensitivity of an individual prior to another engagement where sexual arousal and fulfillment is intended.

In other cases, erotic massage may be used professionally to help men address issues of premature ejaculation. Methods employed may teach the recipient to relax the musculature of his pelvis and thus prolong arousal and increase pleasure.

Erotic massage or sensuous massage is the use of massage techniques to achieve or enhance sexual arousal. Massages have been used for medical purposes for a very long time. Its use for erotic purposes also has a long history.


Today it is used by some couples on occasions as part of lovemaking, either as foreplay or as the final sex act. Erotic massages typically feature massages in erogenous zones of the body to increase sexual arousal.

In the Western medical tradition genital massage of a woman to orgasm by a physician or midwife was a standard treatment for female hysteria, an ailment considered common and chronic in women.

In 1653, Pieter van Foreest advised the technique of genital massage for a disease called "womb disease" to bring the woman into "hysterical paroxysm". Such cases were quite profitable for physicians, since the patients were at no risk of death, but needed constant treatment.

However, the vaginal massage procedure (generally referred to as 'pelvic massage') was tedious and time consuming for physicians. The technique was difficult for a physician to master and could take hours to achieve "hysterical paroxysm."

Referral to midwives, which had been common practice, meant a loss of business for the physician, and at times husbands were asked to assist.

A solution was the invention of massage devices, which shortened treatment from hours to minutes, removing the need for midwives and increasing a physician’s treatment capacity.

Already at the turn of the century, hydrotherapy devices were available at Bath, and by the mid-19th century, they were popular at many high-profile bathing resorts across Europe and in America.

By 1870, a clockwork-driven vibrator was available for physicians. In 1873, the first electromechanical vibrator was used at an asylum in France for the treatment of hysteria.