Acronyms

A - B - C

AFAIC:
As Far As I'm Concerned

AFAIK:
As Far As I Know

AFAIWC:
As Far As I Was Concerned

AGDoA:
A Great Deal of Affection

AFAIWC:
As Far As I Was Concerned

AKA:
Also Known As

ARG:
Alternate Relationship Geometries

BBW:
Big Beautiful Woman

BDSM:
Bondage/Discipline/Sadomasochism B&D does not necessarily imply S&M, nor does S&M imply B&D but there is enough overlap and common ground that the two groups are generally lumped together.

BTDT:
Been There Done That

BTDTMT:
Been There Done That Major Time

BTW:
By The Way

BYKT:
But You Knew That

BYKTA:
But You Knew That Already

E - F - G

DADT:
Don't Ask Don't Tell

DOMA:
Defense of Marriage Act

D/s:
Dominant/submissive relationship, another facet of B&D/S&M type relationships. Some people only do emotional D/s without and B&D or S&M.

EG:
Evil Grin

EPID:
Every Person Is Different

FAQ:
Frequently Asked Questions; a list of information people wish others knew, posed in the form of questions and answers

FF:
A dyad where both partners are female

FFF:
A triad with three females, possibly a V centering on the middle female

FFM:
A triad of a Female, another Female, and a Male, possibly a V centering on the middle female

FMF:
A triad of a Female, a Male, and another Female, possibly a V centering on the middle male

FMM:
A triad of a Female, a Male, and another Male, possibly a V centering on the middle male

FWIW:
For What It's Worth

FYI:
For Your Information

G/L/B/T or GLBT:
Gay Lesbian Bisexual Transgendered

GMTA:
Great Minds Think Alike

H - I - J

HBB:
Hot Bi-Babe, a term used in wannas by men looking for sex with two women at the same time. It is also used (affectionately) by some poly people who feel that they (or others they know) really are Hot Bi-Babes. This term can be used for either sex.

HNG:
Horny Net Geek

IANAL:
I Am Not A Lawyer. Often followed by but and some pseudo legal advice.

IIRC:
If I Recall Correctly

IME:
In My Experience

IMHO:
In My Humble Opinion

IMNSHO:
In My Not So Humble Opinion

IMO:
In My Opinion

IYO:
In Your Opinion

IRL:
In Real Life

LDR:
Long Distance Relationship

K - L - M

LDR:
Long Distance Relationship

LOL:
Laughing out loud

LMAO:
Laughing My A** Off

LTNS:
Long Time No See

MFF:
A triad with a Male, Female, and another Female, possibly a V centering on the middle female

MFM:
A triad with a Male, Female, and another Male. Possibly a V centering on the middle female

MMF:
A triad with a Male, another Male. And a Female, possibly a V centering on the middle male

MMM:
A triad with three males, possibly a V centering on the middle male

MOTAS:
Member Of The Appropriate Sex

MOTOS:
Member Of The Opposite Sex

MOTSS:
Member of the Same Sex

MPW:
My Poly Weekend (what happened good or bad over the weekend)

N - O - P

N:
4 person relationship. Four people are having sex. Everyone may or may not have met each other or be friends but they know they exist. See Z

NRE:
New Relationship Energy That lovely euphoria you experience when you become involved with a new love; the world seems brighter, people seem more beautiful and chocolate tastes even better.

NTS:
New Toy Syndrome (see NRE)

Odt:
Not even. Weird. Strange. Applies to most of us.

OMG:
Oppressive Majority Group or Oh My God

OPW:
Our Poly Weekend

ORE:
Old Relationship Energy or the valuable stuff you get from years of digging together

OSO:
Other Significant Other

OTOH:
On The Other Hand

PC:
Politically Correct, Personal Computer

PDA:
Public Display of Affection (or Personal Digital Assistant)

PIV:
Penis In Vagina (a certain type of sex)

PLL:
Poly Locator List (Phase Locked Loop if you're a geek)

PMR:
Poly Mixed Relationship, one or more polyamorous, one or more monogamous

PNW:
Poly NorthWest, I mean Pacific NorthWest

PWP:
Poly Wanna Potluck, a gathering of polyamorous people for food and conversation

Q - R - S

RL:
Real Life, i.e. not on the computer

ROFL:
Rolling On Floor Laughing

ROTF:
Rolling On The Floor

ROTFL:
Rolling On The Floor Laughing

ROTFLMAO:
Rolling On The Floor Laughing My A** Off

ROTFLMAOSTC:
Rolling On The Floor Laughing My A** Off Scaring The Cats

SISL:
Stranger In A Strange Land; Book by Robert Heinlein

SO:
Significant Other

SQO:
Some Quantity Of

SSO:
Secondary Significant Other

T - U - V - W - X - Y - Z

TOCOTOX:
Too Complicated TO eXplain

TPE:
Total Power Exchange. A BDSM acronym for a master; slave relationship that includes all of life, not just sex.

TTFN:
Ta Ta For Now

WRT:
With Regard To

V (Vee):
A relationship of three people where one person has two partners, but the partners do not have a strong bond. Two dyads having one person in common. The bonding between the people on the ends of the V can vary wildly depending on the people involved. Example, a triad may sexually be a V but emotionally an equal triad. Or a triad may be sexually and emotionally a V where the partners would split if the focus of their relationship left them.

YMMV:
Your Mileage May Vary

WEG:
Wide Evil Grin

Z:
4 person relationship. Four people are having sex. Everyone may or may not have met each other or be friends but they know they exist. See N