These are all jargon, abbreviations and code words used in personal ads like craigslist casual encounters and dating profiles on the internet and swinger magazines you see in the adult stores:

• w4m: a woman seeking a man.
• m4m: a man seeking a man.
• m4w: a man seeking a woman.
• w4w: a woman seeking a woman.
• t4m: a transgendered or transsexual person seeking a man.
• m4t: a man seeking a transgendered or transsexual person.
• mw4mw: a man and woman couple seeking a man and woman couple.
• mw4w: a man and woman couple seeking a woman.
• mw4m: a man and woman couple seeking a man.
• w4mw: a woman seeking a man and woman couple.
• m4mw: a man seeking a man and woman couple.
• w4ww: a woman seeking two or more women.
• m4mm: a man seeking two or more men.
• mm4m: two or more men seeking a man.
• ww4w: two or more women seeking a woman.
• ww4m: two or more women seeking a man.
• mm4w: two or more men seeking a woman.
• m4ww: a man seeking two or more women.
• w4mm: a woman seeking two or more men.
• t4mw: a transgendered or transsexual person seeking a man and woman couple.
• mw4t: a man and woman couple seeking a transgendered or transsexual person.
• 225: Seeking domination (will accept when told that 2+2=5).
• 420: 4:20, Four-Twenty, implies recreational marijuana or cannibis use.
• 69: sixty-nine, simultaneous mutual oral sex.
• ASL: sometimes, A/S/L Age, Sex and location. three basic questions that narrow down your interest in someone.
• ATM: Ass To Mouth – Anal copulation where the penis pulls out and ejaculates into a mouth.
• B&D: B/D, Bondage and Discipline.
• BB: Bodybuilder, or Barebacking.
• BBBJ: BareBack Blow Job, oral sex without a condom, maybe even cumming in mouth.
• BBC: Big Black Cock, or Big Black Cunt.
• BBW: Big Beautiful Woman.
• BDSM: Consensual roleplay involving bondage/discipline, dominance/submission and sadism/masochism.
• Becky: blow job, oral sex.
• BF: Black Female, or Boyfriend.
• BHM: Big Handsome Man (not as common as BBW).
• Bi: Bisexual.
• BiF: Bisexual Female.
• BiM: Bisexual Male.
• BJ: Blow Job (Fellatio).
• BMW: (Big Mexican Woman).
• BOTS: Bit on the Side.
• BTW: By The Way…
• BWC: Big White Cock.
• CBT: Cock & Ball Torture, used in BDSM.
• CD: Cross Dresser.
• CFNM: Clothed female, naked male.
• CP: Cock Play, between 2 or more males.
• CPL: Couple.
• D/D: drug and disease.
• DDF: Drug and Disease Free.
• DL: Down low: secretive same gender sex, often parallel to a heterosexual relationship.
• Dom: Male Dominant partner/participant in BDSM.
• Domme: Female Dominant partner/participant in BDSM.
• DP: Double Penetration, as when one person is penetrated by two objects.
• D/s: Dominance and Submission – lowercased "s" signifies power exchange.
• DTE: Down-to-earth.
• DWF: Divorced White Female.
• DWM: Divorced White Male.
• FB: Fuck-Buddy.
• FtM: sometimes F2M, Female-to-Male Transgendered or Female-to-Male Transsexual.
• FWB: Friend With Benefits (friendship plus sex and no emotions).
• GAM: Gay Asian Male.
• GB: Gang Bang, a person having sex with multiple partners in turn or simultaneously.
• GBM: Gay Black Male.
• GF: Gay Female (Lesbian), or Girlfriend.
• GG: Genetic Girl/Real Girl/All-Girl as opposed to a TV/TS/TG "girl".
• GHM: Gay Hispanic Male.
• GSOH: Good Sense Of Humour.
• GWC: Gay White Couple.
• GWF: Gay White Female.
• GWM: Gay White Male.
• Het: Heterosexual.
• HJ: Hand-Job.
• HWP: Height Weight Proportional: indicates an 'ideal' body weight.
• IRL: In Real Life: face to face meeting.
• ISO: In Search Of.
• JO: jack off, jerk off or handjob.
• LDR: Long Distance Relationship.
• LF: Looking For.
• LS: Legally Separated.
• LTR: Long Term Relationship (opposite of NSA).
• MBA: Married But Available.
• MBC: Married Black Couple.
• MBiC: Married Bisexual Couple.
• MHC: Married Hispanic Couple.
• MOTOS: Member of the Opposite Sex.
• MOTSS: Member of the Same Sex.
• MtF: sometimes M2F, Male-to-Female transgendered or Male-to-Female transsexual..
• MWC: Married White Couple.
• ND: Non-drinker or No Drugs.
• NK: N/K, No Kids.
• NS: Non-smoker or non-smoking.
• NSA: No strings attached; no future obligation—opposite of LTR.
• OFAC: Own Flat And Car.
• OHAC: Own House And Car.
• OTK: Over The Knee, see erotic spanking.
• PNP: Party and Play (drugs, usually crystal meth, and sex).
• Poly: Polyamory.
• Pre-Op: Pre-operative transsexual with genitalia unaltered, typically male-to-female.
• Roses: money, often implies prostitution.
• RTS: Real-Time Sex.
• S&M (also S/M): Sadomasochism (Sadism & Masochism).
• SAE: Self Addressed Envelope.
• SASE: Self Addressed Stamped Envelope.
• SBF: Single Black Female.
• SBM: Single Black Male.
• SBiF: Single Bisexual Female.
• SBiM: Single Bisexual Male.
• ski: an outdoor snow or water sport, or code for cocaine use.
• snow: cocaine.
• SSBBW: Super-Sized Big Beautiful Woman.
• STD: sexually transmitted disease.
• Str8: Straight (not bisexual or gay).
• sub (also subby or subbie): Submissive participant in BDSM.
• SWF: Single White Female.
• SWM: Single White Male.
• SWS: Sex Without Strings (one night stand).
• TDH: Tall, Dark, and Handsome.
• TG: Transgender person.
• Tina: Methamphetamine.
• TLC: Tender Loving Care.
• TS (also Transsexual or Tranny): Transsexual person, typically male-to-female.
• TT: Titty-Torture, used in BDSM.
• TV: Transvestite.
• TYVM: Thank You Very Much.
• TTYL: Talk To You Later.
• VAS: Vasectomy.
• VGL: Very Good Looking.
• WE: W/E, Well Endowed, larger than average male organ.
• WS: W/S, Watersports.
• WLTM: Would Like To Meet.
• WTR: Willing To Relocate.
• VGL: Very Good Looking.
• YO: Years Old.