ok help explain what you guys can

omg= oh my god
btw= by the way

please add what you can

stfu= shut the fuck up
:D

IMHO = In My Humble Opinion (c.f. IMNSHO)
IMNSHO = In My Not So Humble Opinion (c.f. IMHO)
FWIW = For What It's Worth
IOW = In Other Words
IANAL = I Am Not A Lawyer...
MNAO = Mazda North American Operations

rofl=rolling on floor laughing
lol= laughing out loud

afaik = as far as I know

oops, forgot...

IIRC = If I Remember Correctly

IFAICGU - I've Fallen And I Can't Get Up.

TISG =

THIS IS SO GAY

kinda like your I'm gonna kill myself thread

LMAO =

laughing my ass off

WIMHP =

Where is my horsepower?

Courtesy of Miataforum.com, here is a pretty complete list of acronyms. I've bolded the ones this forum might find the most useful. ;)

AFAIK - as far as I know
AFU - all f'ed up
BFH - big f'ing hammer
BH - big hammer
BOV - blow off valve
BS - bull s**t
BSEG - big s**t eating grin
BTDT - been there done that
BTT - back to top
BTW - by the way
CAI - cold air intake
CIOEA - cut it out, enough already
CTA - check the archives
DFTFT - Don't feed the f'ing trolls
ECU - electronic control unit
ETG - exhaust temp gauge
EYHO - eat your heart out
FI - forced induction (turbo/supercharge)
FPG - fuel pressure gauge
FRED - f'ing ridiculous electronic device
FTD - fixin' to die
FUBAR - F'ed up beyond all recognition
FWIW - for what it's worth
HBD - has been drinking
HTH - hope this helps
IIRC - if I recall correctly
IMHO - in my humble opinion
IMNSHO - in my NOT SO humble opinion
IMO - in my opinion
IOW - in other words
JDM - Japanese domestic market
J/K - just kidding
LOL - laughs out loud
MS - more of same
N/A - naturally aspirated
NOS - nitrous oxide
OBD II - Onboard Diagnostic II
OCP - open circuit potential
OEM - original equipment manufacturer
OTOH - On the other hand
PITA - pain in the a**
PO - previous owner
POETS - p*** on everyone, tomorrow's Saturday
ROFL - rolling on the floor laughing
ROFLMAO - rolling on the floor laughing my a** off
RTFM - read the f'ing manual
SNAFU - situation normal, all f'ed up
SOP - seat of pants
SSDD - same s**t, different day
SUV - sports utility vehicle
TCTS - to change the subject
TGIF - thank God, it's Friday
TIA - thanks in advance
TMI - too much information
TPS - throttle position sensor
VBG - very big grin
WOFTAM - waste Of f'ing time and money
WOT - wide open throttle
WTF - what/when/where the f***
WYSIWYG - what you see is what you get
YMMV - your mileage may vary

IPLT = I post lame threads
IBTL = I beat the lock also In before the lock

Oh, one more that I saw recently on a mailing list:

FLAPS = Friendly Local Auto Parts Store

SOMF = Set on my face!!!!!!!

BTW IMNSHO AFAIK YGAABODASOB

J/K

VBG

YGAABODASOB = You Guys Are A Bunch Of Dumb A$$ Sons of Bitches

This comes courtesy of www.nasioc.com

AMHIK: Ask Me How I Know

AYBABTU: "All Your Base Are Belong To Us" I'm not explaining this one

DSPO: Dip Shit Previous Owner

GOMT: "Grap on my tired" (long story) basically another acronym for WTF. (if you don't know WTF... you shouldn't be on the inTARw3b)

PEBKAC: Probable Error Between Keyboard and Chair (ur a n00b)

UTFSF: Use the F'in Search Function

WOT: Wide open throttle

WTB: Want To Buy

WTT: Want To Trade