F: female
Face sitting: a fetish practice where a woman sits on a man's face, smothering him.
Facial: cuming on the face.
Faggot Fair: gay pride parade/celebration/demonstration/gathering
Faggot: a male homosexual
Fainting: passing out or losing consciousness
Fairy: a male homosexual
Fam: to grope a woman
Family Jewels: the testicles
Family: a group of adults and/or children bound together by ties of mutual commitment, primary relationships, intimacy and shared lives, and regarding themselves as a family.
Famulus: slaves, family
Fanny: female anus and/or buttocks
Fantasize: thoughts which are sexually stimulating.
Fantasy: mental image or illusion, sometimes sexual Fantasy Play: acting out sexual fantasies
Felch : to ejaculate into an anus and then lick or suck the semen out. Sometimes this word is mistakenly used to refer to placing a gerbil or other small animal into the anus.
Fellatio: oral sex on a male with the use of a tongue and lips and sometimes teeth.
Female ejaculation: when a woman has an orgasm and expels fluid from her genitals. Note: this is a controversial concept, some people suggesting that this is nothing more than a woman urinating after or during an orgasm.
Female impersonators: men who dress in women's clothing, often for pay
Feminine: a highly subjective concept of the essential qualities of a woman.
Feminization: dressing a man up in women's clothing, make-up, etc. to take on a female appearance. Sometimes used in BDSM play as a form of humiliation.
Femme: possessing traditional feminine appearance, attributes and behaviors. Often used to describe gay men and women
Femoral Coitus: penis-thigh sex
Fescennine: vulgar
Fetish: a strong sexual interest in or obsession over some object, body part, or activity.
Fetishes: an object that replaces people as primary object of love
Fetishism: eroticization of objects, behaviors, and/or body parts
Fibula: bar that runs through foreskin of male and attaches to semi-circle device, used by Romans to prevent intercourse
Ficaro: bordello
Fidelity: the quality or state of being faithful
Finger: to stimulate a woman sexually with the hand, especially stimulating the clitoris to produce an orgasm.
Fish: a female
Fissiparism: Reproduction by fissioning
Fist / Fisting: to place much of the hand, or the entire hand, in the vagina or anus.
Fisting: insertion of hand or large part of hand into rectal, vaginal or oral cavity.
Flaccid: reference to a penis, soft, not aroused.
Flagellation: striking a person with an object
Flash: to expose oneself, especially in a short, sudden manner. Usually used to refer to men showing their penis and women showing their breasts.
Flatulence: passing gas from bowels
Flatuphilia: arousal from having partner pass gas
Flirting: pretending to have affection for another person
Floating hog ranches: boats used to transport prostitutes to the Western U.S. and from which they conducted business in route
Flooding The Cave: Inserting the penis into a woman's pussy and then urinating inside her.
Florentine girdle: chastity belt
Flower boats: Chinese boats used for prostitution
Fluffer: a woman or man who performs oral sex on an actor to arouse him in preparation for a 'cum shot' that must be filmed quickly and with little on-camera preparation.
Foot binding: the wrapping of feet, done by Chinese and others
Foot fetish: sexual obsession toward feet or shoes.
Foot job: rubbing feet on the penis, usually until ejaculation.
Foreplay: Any action which causes increased sexual excitement before sexual intercourse. Foreplay should be continued until the female requests the male to insert his penis into her vagina. As a rule, when she senses her body is ready for sexual intercourse, the vagina will be dilated and the vulva will be moist. The male usually needs less foreplay than the female.
Foreplay: various acts of attention, kissing, oral sex, fondling prior to intercourse
Foreskin: a piece of skin surrounding the head of the penis. It is removed in the operation known as circumcision. In uncircumcised men, the foreskin often rolls back during erection.
Formicophilia: enjoyment of the use of insects (ants) for sexual purposes
Fornication: sexual intercourse between unmarried persons.
Fornicatory Dolls: plastic blow up, rubber, or mechanical dolls used for penetration
Fratrilagnia: arousal from having sex with one's brother
Freemate, Paramour, Consort: Terms used to describe non-married members of a multi-mate relationship.
French Culture: oral-genital sexual activity
French Tickler: A condom with extra latex, plastic or rubber attachments. Used as a novelty only. Usually not certified for birth control or disease prevention.
French: oral sex; genital or anal
Frenulum: a thin strip of flesh on the underside of the penis that connects the shaft to the head.
Fricatrice: a whore
Friends First Swingers: People who prefer to get to know someone before having sex. This may mean socializing at clubs, exchanging email and chatting online, or going out on a few dates (dinner, movies, sports events, etc.--same as traditional dating) first.
Frig: to obtain orgasm or engage in copulation
Frottage: rubbing body against partner or object for arousal
Frotteur: a person aroused by brushing up against clothed people in public places
Fruit: a male homosexual
FTM: female to male, as in cross-dressing or a transsexual.
Fuck: to have sexual intercourse
Fun and Games: euphemism for sexual activity.
Furor uterinus: nymphomania
Furtling: the use of fingers underneath cut-outs in genital areas of photos for arousal