Macrame  
Bondage technique which applies rope or twine in a net-like decoration over the torso. Very popular in Japan and in gay bondage.

Maid Training
A game where the submissive learn the etiquette of service. The maid is instructed in how to walk, talk and serve to the highest standards.

Make-Out Slut
A woman who tends to kiss many men but rarely (or never) has sexual intercourse.

Make a Milk Run
To cruise a men's room.

Man in a Boat
Clitoris

Mary
A standard camp name used by gay men to refer to each other.

Masochism
Ability to transfer emotions caused by pain to erotic feelings.

Masturbation, Masturbate
Giving oneself sexual pleasure, especially using the hand to stimulate the genitals, and often resulting in orgasm.

Masturbatory
Relating to or similar to MASTURBATION.

Mata
Groin, Crotch or Thigh

Matanawa 
Crotch rope.

Meat Rack
A gay male cruising area.

Medical
Role-play where the activities of medicine are eroticized. Typical medical play scenarios include intimate examinations, catheterization and enemas. It should be noted that attempting to carry out medical procedures without medical training and hygiene is potentially highly dangerous.

Menage A TroisMenage A Trois
When three people have sex together at once. A threesome.

Merkin
Pubic hair wig.

MILF
Acronym for "Mom I'd Like to Fuck." Hot older women.

Missionary Position
The "traditional" sexual position in the West, where the woman lies on her back with her legs spread and the man mounts her with his arms supporting his weight.

Mistress
A dominant woman in a BDSM relationship; a DOMINATRIX.

Mitten Queen
A gay man who likes to masturbate others.

Molded Latex
Molded latex is made by dipping a cast in liquid latex (often in the colors black, red and transparent), afterwards the cast are dried and then baked (vulcanized) in a oven.

Momo 
Peach. Momo shibari is a form of tying the thighs so the sub is forced to kneel with the head low to the floor and the buttocks raised so they resemble a peach.

Money Shot
The climactic scene in a porn film when the man ejaculates, usually onto the woman's body or face; a cum shot.

Monkey Sex
Slang for wild, unusual or vigorous sexual activity.

Monkey Wrench
When someone takes your dick back between your legs and sucks you off.

Mook
Pejorative term for a fan who is obsessed with the adult industry.

Morning Glory
Intercourse imediately after waking up.

Moses
A man who enjoys going down on a woman during her period. Derived from the Biblical figure Moses, who parted the Red Sea.

MS
BDSM abbreviation for Master/Slave

Muff Diving
Cunnilingus.

Multiorgasmic
Prone to having MULTIPLE ORGASMS.

Multiple Orgasm, Multiple Climax
Having more than one orgasm in a single sex session, especially in rapid succession. Usually experienced by women.

MummificationMummification
A person subjected to 'Mummification' is completely wrapped up, often in Saran Wrap.

Munch
A social gathering of the fetish/BDSM community, usually in a public restaurant. Fetish wear, toys and public play is not allowed.

Mutual Masturbation
Masturbating in close proximity to someone else or using the hand to fondle another person's genitals.

Mysophilia
Arousal from soiled clothing or foul odors.

Nancy
An effeminate man (Nancy boy).

Nasolingus
Arousal from sucking nose of partner.

Nawa
Rope; hemp rope; jute rope.

Nawashi
A professional rope bondage performer; one who makes rope. A rope artist.

Ninty-Six (96)
Man and woman farting on each other's heads simultaneously.

Nocturnal Emission
When a man has an erotic dream and ejaculates in his sleep. A wet dream.

Nooner
A sexual encounter during the lunchtime hour, especially one that takes place at the office; see also QUICKIE.

Nudie Bar
Term for stripjoints, gentelman's clubs or anyplace women take off their cloths.

Nymphomania, Nymphomaniac
Term for one who is sexually obsessed or has sex with many partners.

O-Face
The facial expression of someone when having an orgasm.

Omanko
Pussy. The only "really" bad word in Japanese.

One-Eyed Cyclops, On-Eyed Willie
(French) The head of the penis.

Onanism
MASTURBATION.

Ophidiophilia
Arousal from snakes.

Oral Contraceptive
A pill taken by women that allows them to have sex without becoming pregnant; birth control pill.

Oral Sex
A sex act where the mouth of one person is placed on the genitals of another. See also FELLATIO (oral sex performed on a man) and CUNNILINGUS (oral sex performed on a woman).

Oreo Sex
Sex between two black men and a white man.

Orgasm
The pleasurable, climactic release of sexual tension. In a man, it is usually accompanied by EJACULATION.

Orgy
A sexual encounter with three or more people. Group sex.

Oshiri
Japanese for ASS.

Oyster
A derivation of the tea bag, which is accomplished by numbing one's testicles with ice and then inserting them in someone's mouth.

Packing
A lesbian (often butch) who wears an addition such as rolled up socks or dildo in her pants crotch area.

Paint Brush
Pubic hair shaped in a wide stripe.

Paizuri
Japanese for Tit Fucking.

Pancake
A 1950's term among African-American lesbians to denote a butch who allowed herself to be flipped - from "top" to "bottom".

Paraphilia
A sexual obsession, usually over an object or sex act. See also FETISH.

PC (Pubococcygeus) Muscle
The muscle targeted in Kegel exercises.

Pearl Necklace
Whenever you cum on the neck/cleavage area of a girl - it takes on the look of beautiful jewelry.

Pearl String
A set of anal beads.

Peg, Pegging
The act of using a Strap-on Dildo.

Penetration, Penetrate
1. Inserting the penis into the vagina.
2. Inserting the penis into the anus.

Penis
The male sex organ that engorges with blood and becomes erect. It is inserted into the vagina during sexual intercourse and expels semen when a man reaches an orgasm.

Petit Mort
French for the "little death"; an ORGASM.

Piggy
A Heavy submissive who can take a lot of pain and likes to show off.

Pocket PalPirate's Treasure
While having ANAL SEX, you strike a load. After you've found this buried treasure deep in her booty, you scream, "Argh!", like a pirate.

Play
Sexual activity, especially BDSM activity.

Pocket Pal
A sex toy shaped to resemble a vagina.

Podophilia
Arousal from feet.

Polyamory
Having sexual relationships with more than one person.

Pony GirlPony Girl, Boy
Pony play is a form of BDSM and/or fetish playing, and role playing. In pony play, the slave becomes a "human pony". It is a special interest area of BDSM. It can combine bondage, discipline, Dominance and submission, even a little Sadomasochism.

Pop Someone's Cherry
To take someone's virginity. See CHERRY.

Pork
As in "To Pork", meaning to have sex with.

Porn
PORNOGRAPHY

Pornography
Any sexually explicit picture, movie, book, etc. Usually used in a derogatory sense. Compare EROTICA.

Potato Queen
(Asian) guys preferring white men.

Pre-Cum
A small amount of clear fluid sometimes emitted by the penis during sexual arousal/stimulation but before ejaculation.

Premarital Sex
Sexual intercourse between two young, unmarried people.

Premature Ejaculation
When a man cannot control the timing of his orgasm and ejaculates too quickly.

Priapism
An medical condition characterized by a painful erection that won't go down.

Prick
Slang for penis.

Princeton Rub
Intercourse between two men in which one's penis rubs between the other's thigh, or between the two men's abdomens.

PSE
Porn Star Experience, A subjective term, used as praise for a provider that might have a high energy level, a particularly hot look, or is very accommodating ("nastiness" factor).

Pudendum, Pudenda
A woman's external genitals; the VULVA.

Purple Mushroom
This occurs when a woman is giving you oral sex and you withdraw your penis in order to poke it back into her cheek.
It should leave a lasting impression similar to purple mushroom.

Pussy
The vagina.

Pussy Juice
JUICE.

Pussy Quivers
A warm, pleasant tingling and/or twitching sensation in the anus anticipatory to anal sex.

PV
Private viewing: Dancing, modeling, perhaps a HJ; not usually FS.

Queef
To fart with the vagina.

Queer
Gay or lesbian. Usage note: Originally a derogatory term, now used by gay and lesbian people to refer to themselves.

Quickie
Sexual intercourse that is short in duration. See also NOONER.