mac daddy – machismo – macroorchidism – macrophilia – madonna-whore complex – maid of honor – maiden – maidenhead – maiesiophilia – maieusiophilia – mail-order bride – major vestibular glands – make-out slut – makeup – makeup sex-make a pass – mala badal – male – male chauvinism – male circumcision – male dominant sex position – male ejaculation – male gaze – male hermaphroditism – male lactation – male menopause – male Pill – male prostitute – male prostitution – male rape – male reproductive system ( human ) – maledom – maleness – mammae – mammal – mammary gland – mammary intercourse – manic-depressive hypersexuality – Thaddeus Mann – manual genital stimulation – manual-genital stimulation – marianismo – marital aid – marital arts – marital bed – marital rape – marital status – maritate – marriage – marriage banquet – marriage by abduction – marriage by capture – marriage ceremony – marriage contract – marriage guidance – marriage in South Korea – marriage license – marriage of convenience – marriage strike – marriage vows – marriageable age – Married Love – Mars Bar party – masculinity – masculinization – mask – mask fetishism – mask of pregnancy – masochism – masochist – massage – massage parlor – mastectomy – master – Masters and Johnson – William Masters and Virginia Johnson – W. H. Masters – William Howell Masters – mastopexy – masturband – masturbation – masturbation aid – masturbation fantasy – masturbilia – matchmaker – matriarchy – matrilinearity – matrilocal residence – matron of honor – Mattachine Society – Max Marcuse – May – December marriage – Mayer-Rokitansky syndrome – Mayer-Rokitansky-Küster-Hauser syndrome – meat market ( sexuality ) – meatal advancement – meatal stenosis – meatal ulceration – meatitis – meatotomy – meatus – mechanism – mediastinum testis – medical fetishism – medical scene – medroxyprogesterone acetate – medulla of ovary – Meese Commission – megalopenis – melanotan II – melasma – melasma praegnans – membrana granulosa – membrum virile – men on the down-low ( DL ) – men who have sex with men – menarche – menopause – menstrual – menstrual cramp – menstrual cup – menstrual cycle – menstrual flow – menstrual taboo – menstruation – mental disorder – merkin – mesometrium – mesosalpinx – mesovarium – methyltestosterone – microorchidism – micropenis – microphallus – microphilia – mid-life crisis – mifepristone – mile high club-military fetishism – milk fetishism – mindfuck – minor vestibular glands – minotaur – misattribution of arousal – miscarriage – miscegenation – misogynist – misogyny – missionary position – mistress – misyar marriage – mittelschmerz – mixed wrestling – mixophilia – mixoscopia – mock execution – Modern Primitives – modern primitives – mole fetishism – Albert Moll – Molluscum contagiosum – John Money – Monilia – monilial vaginitis – monogamous relationship – monogamy – monopedomania – monorchism – mons pubis – mons veneris – morbid jealousy – morganatic marriage – Mormon marriage – Mormon view of marriage – morning gift – morning-after pill – morning-after-pill – morphophilia – mortality – morula – Mother Clap – motivation theories – mount – mourning clothing – MSM – mucinous tumor – mucopurulent cervicitis – mud wrestling – mujra ( courtesan ) – mukhannathun – muliebrity – Müllerian agenesis – Müllerian duct – Müllerian duct structures – Müllerian-inhibiting hormone – multipara – multiparous – multiphilia – multiple birth – multiple orgasm – multiple personality – multiple wedding – multiplexed paraphilia – mummification – Muslim marriage – Musée de l ' Érotisme – music fetish – mut ' a marriage – mutilation – mutta marriage – mutual masturbation – muxe – Mycoplasma hominis – myometrium – mysophilia – ménage à trois –