- ESTROGEN
- EUNUCH
- EXCHANGE SEX or TRANSACTIONAL SEX
- FACE SITTING
- FACEBOOK or INSTAGRAM WHORE
- FACIAL
- FAG HAG
- FALLOPIAN TUBES
- FANNY
- FANNY MAGNET
- FAP
- FARANG
- FARM SEX
- FAUXMOSEXUAL
- FAYGELEH
- FEAR PLAY
- FEEL UP
- FEELDOE DILDO
- FELCHING
- FELLATIO
- FEMALE ATHLETE TRIAD
- FEMALE EJACULATION vs. SQUIRTING
- FEMALE MASTURBATION
- FEMALE ORGASMIC DISORDER (FOD)
- FEMALE SEXUAL FUNCTION INDEX (FSFI)
- FEMALE SEXUAL INTEREST/AROUSAL DISORDER (FAD) or HYPOACTIVE SEXUAL DESIRE DISORDER (HSDD)
- FEMBOT
- FEMDOM
- FEMME
- FEMORAL INTERCOURSE
- FENCE PAINTING
- FERTILITY AWARENESS
- FETISH
- FIFTY SHADES OF GREY
- FIGGING
- FIGMO
- FIST FUCKING (FISTING OR HANDBALLING)
- FLAMING
- FLAPPER
- FLIP & FUCK or FLIP AND FUCK
- FLOG THE LOG
- FLOGGER
- FLOGGING
- FLUFFER
- FOOT WORSHIP
- FORCED MILKING
- FORDYCE SPOTS
- FORESKIN
- FORNICATION
- FOUCAULT