F2F Face-to-Face
FBKS Failure Between Keyboard and Seat
FE Fatal Error
FF&PN Fresh Fields and Pastures New
FO F*** Off
FOAF Friend Of A Friend
FTASB Faster Than A Speeding Bullet
FTL Faster Than Light
FTTB For The Time Being
FUBAR F***ed Up Beyond All Recognition
FUBB F***ed Up Beyond Belief
FUD (Spreading) Fear, Uncertainty, and Disinformation
FWIW For What It's Worth
FYA For Your Amusement
FYI For Your Information
FYM For Your Misinformation

GAL Get A Life
GG Good Game or Gotta Go
GIGO Garbage In, Garbage Out
GIWIST Gee, I Wish I'd Said That
GL Good Luck
GLYASDI God Loves You And So Do I
GMTA Great Minds Think Alike
GNBLFY Got Nothing But Love For You
GR&D Grinning Running And Ducking
GR8 Great
GRRRR "Growling"
GSOAS Go Sit On A Snake
GTG Got To Go
GTGB Got To Go, Bye
GTGP Got To Go Pee
GTH Go To Hell
GTSY Glad To See Ya
GYPO Get Your Pants Off

HAGO Have A Good One
HAK Hugs And Kisses
HB Hurry Back
HD Hold
HHO1/2K Ha Ha, Only Half Kidding
HHOK Ha Ha, Only Kidding
HIOOC Help! I'm Out of Coffee
HTH Hope This (That) Helps
HUA Heads Up Ace
HUYA Head Up Your A**

IAC In Any Case
IAE In Any Event
IANAC I Am Not A Crook
IANAL I Am Not A Lawyer
IBT In Between Technology
IBTD I Beg To Differ
IC In Character
IDGAF I Don't Give A F***
IDGI I Don't Get It
IDK I Don't Know
IDKY I Don't Know You
IDST I Didn't Say That
IDTS I Don't Think So
IFAB I Found A Bug
IFU I F***ed Up
IGGP I Gotta Go Pee
IIIO Intel Inside, Idiot Outside
IIMAD If It Makes An(y) Difference
IIRC If I Remember Correctly
IIWM If It Were Me
ILICISCOMK I Laughed, I Cried, I Spat/Spilt Coffee/Crumbs/Coke
On My Keyboard
ILY I Love You
IMHO In My Humble Opinion
IMNSHO In My Not So Humble Opinion
IMO In My Opinion
INMP It's Not My Problem
INPO In No Particular Order
IOH I'm Outta Here
IOW In Other Words
IRL In Real Life
ISS I Said So
ITM In The Money
IYKWIM If You Know What I Mean
IYSS If You Say So

J/C Just Checking
J/K Just Kidding!
J/W Just Wondering
JAFO Just Another F***ing Onlooker

KFY Kiss For You
KISS Keep It Simple Stupid
KIT Keep In Touch
KMA Kiss My Ass
KWIM Know What I Mean
KYPO Keep Your Pants On

L8R Later
LD Long Distance
LDTTWA Let's Do The Time Warp Again
LLTA Lots And Lots Of Thunderous Applause
LMAO Laughing My Ass Off
LMK Let Me Know
LOL Laughing Out Loud -or- Lots of Luck (or Love)
LTIC Laughing 'Til I Cry
LTNS Long Time No See
LYL Love Ya Lots
LYLAS Love You Like A Sister

MHOTY My Hat's Off To You
MM Market Maker
MorF Male or Female?
MOTD Message Of The Day
MOTSS Members Of The Same Sex
MTFBWY May The Force Be With You
MWBRL More Will Be Revealed Later
MYOB Mind Your Own Business