Swingers, sex party, and sex dating people know most of these online and txt words with their eyes closed and cock buried in someone else's wife, but for the rest of us, here is a little lingo to live by:

ALL CULTURES = all fetishes and sexual activities
B&D = Bondage and Discipline
BI = individual who enjoys both heterosexual and homosexual activities
BI CURIOUS = Willing to experiment with a member of the opposite sex.
CAN ENTERTAIN = Will swing in their own home
CAN TRAVEL = Will swing in your home
CLOSED SWINGING = sexual activities with couples using separate rooms, usually in the same house, a maximum of privacy afforded.
CPC = Contact phone calls
DDF = Disease and drug free
D/F = Dominant Female
GOOD SMOKE = Marijuana or 'grass'
HH = Heels and Hosiery
HMC = Happily Married Couple
HWP = Height/Weight Proportionate
HEDONIST = One who lives for pleasure
INDOOR SPORTS = swinging activities in general
INTERESTED IN FRIENDSHIP = They want more than just sex; a relationship that is deeper than just a sexual encounter
ISO = In Search Of
LIFESTYLE = Generally refers to those who choose swinging as a 'lifestyle'
MEET FOR PLEASURE = Meet for swinging sex. No pretense to a social or emotional situation.
M(W,A,EI,H...etc)C = Married (White, Asian, East Indian, Hispanic... etc) Couple.
NS/LD = Non Smoker, Light Drinker
OFF - PREMISE CLUB = No Swinging at the club. You meet others and make your own arrangements
OPEN SWINGING = Sexual activities with several or all participating couples together in the same room; a minimum of privacy afforded.
PARTIES = Group swinging, more than three couples.
RECREATIONAL SWINGER = One who practices swinging as a recreational diversion.
ROMAN = Group sex, the party scene, orgies
SASE = Self-Addressed Stamped Envelope with your return address on it
SAFE = Naturally or surgically sterile
SAFE SEX = using condoms
S/M = Sadism and Masochism
SINGLES = A swinger without a partner. Does not refer to martical status.
STDF = Sexual Transmitted Disease Free
SOCIAL = Off premise swing party
SPNG = Spanking
Submissive = Passive, wishes to be dominated
TLC = Tender Living Care

So remember these if you're browsing sex party, orgy, or swinger dating databases or whatever it is that you do in your spare time... haha!