Gag
A gag is a device designed to prevent speech. This is usually done by blocking the mouth, partially or completely, or attempting to prevent the tongue, lips, or jaw from moving in the normal patterns of speech.

Gang Bang
When many men have sex with a single woman one after another or even at the same time.

Gaping
Wide Open.

Gassho
Pressing one's hands together in prayer. Gyaku Gassho is a bondage form where the hands are tied behind the back while pressed together; a very difficult position.

Gay
HOMOSEXUAL. Refers to both homosexual men and homosexual women (also called LESBIANS).

Gaydar
The uncanny sensory perception that lesbians and gays have of detecting other gay people in their midst.

Gazongas
Breast

Get Nut
To have sex; to orgasm; to ejaculate.

Giantess
A huge, larger-than-life woman that is a object of fetishistic interest.

Gimp
BDSM term for a sex slave dressed in leather.

Glory HoleGlory Hole
A hole cut through a wall, allowing anonymous sex between people on either side of the wall. Often found in gay sex clubs.

Glans, Glans Penis
The tip of the penis.

Glued Latex
Glued latex clothing is made from latex sheeting that is cut after a pattern, having the parts glued together. Quality, color and thickness can be customized to the individual.

God Brother
An anti-sex religious fanatic.

Go Down
To perform ORAL SEX on a man or woman.

Gokkun
Gulp. Implies a woman sucking off a guy and swallowing.

Golden Enema
Urinating into an open anus.

Golden Screw
When a man urinates inside a woman during intercourse.

Golden Shower 
Urinating on someone else. See also WATERSPORTS.

Gonorrhea
A sexually transmitted disease, caused by the gonococcus bacteria, that causes painful urination in men and puss discharge from the penis.

Gonzo
From founder of gonzo is John "Buttman" Stagliano.
"Gonzo can take on several different forms. It can vary from the cameraman (in adult, very often the director) interviewing the actors, or participating in the scene with dialogue and/or sex. It can also mean that the actors are simply acknowledging the fact that there is a camera shooting what they are doing. So, although in adult gonzo, the cameraman is usually somehow visible or audible, simply the actors playing to the camera constitutes a gonzo scene." .

Gorilla Salad
Pubic hair.

Government-Inspected Meat
A gay man in the armed forces.

Granola Lesbian
A wholesome, health-conscious lesbian. Sometimes referred to as Crunchy Dyke.

Greek Sex
Anal Sex

Guppies
Gay urban professionals, or gay yuppies.

Gyaku
Reverse

Gynonudomanic
Compulsion to rip clothes off others.

G-spot (Grafenberg Spot)
An area in the upper wall of the vagina supposed to be especially pleasurable when stimulated.

Hair Bondage
The term refers not to restraining the hair, but using the hair as a bondage material to restrain the head.

Half-and-Half
When a prostitute performs fellatio and sexual intercourse in a single sex session.

Hammerlock
Wrists are crossed behind the back and pulled upward into the small of the back.

Handkerchief Codes 
Gay color codes used to identify sexual preferences. Done by wearing a colored hankerchief in a back pocket.
Some of the codes in BDSM are:
Black: Paingames, Whipping; Dark Blue: Fucking; Brown: Shit; Grey: Bondage; Red: Fisting; White: Wanking; Yellow: Piss;
Which pocket is also important ie: left = top, right = bottom

Hand Release
Stimulation of the penis to orgasm using hand and fingers.

Hard
When a man is aroused with a stiff penis due to sexual stimulation.

Hardcore
1. Sexual pictures, movies, etc. that show genitals, especially an erect penis, and often include penetration. Opposite of SOFTCORE.
2. Intense or dangerous sexual activity.

Hard On
An erection.

Harlot
A prostitute.

Harness
Bondage apparatus consisting of a network of straps designed to form a web over a part of the body and restrict movement.

Hardwood Floors
Clean-shaven pubic area.

HD
A BDSM abbreviation for humiliation and discipline.

Head (Give Head)
1. Oral sex, specifically performed on a man; FELLATIO.
2. The top part of the penis, the tip.

Heavy Rubber
Term used about some of the hardcore latex games like Multiple Layers, Breath Control, Medical Play.

Helmet
Circumcised.

HentaiHentai
Japanese animation (anime) depicting graphic sexual scenes.

Hermaphrodite
Person with both male and female genitalia.

Hershey Highway
When performing ANAL SEX, you run into some shit.

Het
HETEROSEXUAL.

Heterosexual
A person who has sex with members of the opposite sex. Opposite of HOMOSEXUAL.

Hindu Massage
The woman contracts her vaginal muscles during sex to squeeze you to completion.

Ho
Slang for whore.

Hole In One
The act of sticking your dick in your own ass.

Homosexual
A person who has sex with members of the same sex; GAY. Opposite of HETEROSEXUAL.
Usage note: GAY is the more politically correct term. See also

Honeypot
A woman's genitals.

Hostess Club
A lower end strip club where bargaining for sex acts with the dancers is acceptable, and some activities may occur on premises.

Hot Karl (ATM)
The act in which a woman sucks the cock of the same man who moments earlier was balls deep in her can.

Hummer
FELLATIO.

Hump
1. To have sexual intercourse.
2. To rub the genitals against each other without penetration or even while clothed.

Hung
Having a large penis, often used in the phrase "well hung".

Hustler
A prostitute, especially a male prostitute.

Hymen
A fold of tissue that partly covers the entrance of the vagina in some women. Sexual intercourse tears an intact hymen, and so an intact hymen is viewed as a sign of virginity in a woman. However, the hymen is often torn through non-sexual activities and some women are born without a hymen.

Ice Cream
A woman so sweet you could lick her everywhere.

Impotence, Impotent
The inability to get or sustain an erection. See ERECTILE DYSFUNCTION.

Incubus
A spirit who was thought to lie on top of women and have sex while they slept.

Infantilism
A fetish practice where an adult role-plays being an infant, wearing baby clothing and sometimes being disciplined by a mother figure.

Intact
Said of a woman, still having a hymen, which implies virginity.

Italian
Similar to Russian, but penis between partners butt cheeks.

Jack Off
To MASTURBATE, especially used to refer to men.

Jam
A term used in the mid-twentieth century to denote straight people.

The Jedi Mind Trick
When banging your partner, you repeatedly shout "I'm NOT fucking you, I'm NOT fucking you".

Jerk Off
To MASTURBATE, especially used to refer to men.

Jill Off
For a woman to MASTURBATE.

Juice.
The vaginal lubrication that a woman naturally produces when sexually aroused.

Jujun 
A submissive

Junk In The Trunk
A woman with a flabby, fat ass.

Kaikyaku
With legs spread wide.

Karada
Body; Body harness; rope dress.

Kawaii
Cute.

Kegel
1. Exercises done to increase strength of the pelvic floor muscle. Said to help women achieve orgasm.
2. Named after the Kegel exercise, the flexing of the pelvic muscles that control orgasm and the inner vaginal muscles for tightening.

Kick-Fucking
The act of receiving sexual pleasure from repeatedly getting kicked in the ass.

Kiki
1940s slang term for a lesbian comfortable with either a passive or aggressive partner.

Kikkou
Tortoise; a diamond shaped body harness that resembles the pattern on a tortoise shell; sometimes referred to as a "rope dress."

Kinky
Sexual activity that is somehow non-traditional or exotic. See also BDSM

Kinsey Six
A person who is completely homosexual, as opposed to one with some bisexual inclinations.

Klismaphilia
Arousal from ENEMAS.

Kokigami
A Japanese art where the penis is wrapped in crumply paper and made to look like a dragon or a goose.

Lace Curtains
Refers to the foreskin.

Lactiphilia 
Arousal from lactating breasts.

Latex
Latex, as found in nature, is the milky sap from the sap of the rubber tree (Hevea brasiliensis) and other plants. Often used in Fetish cloths.

Leather Cheerio
The anus.

LFK
Light French kissing. (no heavy tongue)

Lesbian
A woman who has sex with other women; a HOMOSEXUAL woman.

Lesbian Death Bed
The lack of sex that may occur when lesbians are in a long term relationship.

Libido
Sexual interest. Horniness.

Lick-Box
A gay man. Term used in the early 1900's.

Lilies of the Valley
Hemorrhoids.

Lingam
Ancient Indian term for the penis or a representation of the penis; appears in the Kama Sutra and often used in reference to Tantric sex.

Lipstick LesbiansLipstick Lesbian
A lesbian who displays "traditional" feminine dress

Liquid Latex
A self-drying latex substance that paints directly onto the skin or over clothing and dries in about 5-10 minutes. Used to form custom wearable rubber clothing, costumes, masks, ect.

Load
Semen. Sometimes used in the phrase "blow your load" to mean EJACULATE

Lollipop Stop
A highway rest stop used by gay men for cruising.

Lot Lizard
A prostitute that works primarily in truck stop parking lots (usually soliciting from a CB radio).

Lotus 
Folding the legs in a floor-sitting position, like Buddha. The ankles are wrapped together.

Looner
A balloon fetishist. Looners use balloons in sex play with partners, but more often, prefer simply humping the balloons themselves.

Lorena Bobbit
For women. When engaging in ANAL SEX, squeeze your butt cheeks together as tight as you can, and start violently jumping and thrashing your ass around, in an effort to rip his dick off.

Love Tunnel
VAGINA

Lube
Lubricant.

Lubricant
A slippery substance used to make sex more comfortable and pleasurable.

Lucky Pierre
A man, having sex with two other men, who is simultaneously penetrating one man anally while being penetrated anally by the other. He is "lucky" because he is the only one of the three to enjoy both sex acts simultaneously.

Luppies
Lesbian urban professionals, or lesbian yuppies.

Lunchmeat
A woman under five foot who desires oral sex.