AAW – Alive And Well
AISL – After I Stop Laughing
AFK – Away From Keyboard
AYST – After You Stop Talking
CTF – Cheaper Than Free
DLTH – Don’t Listen To Him (Her)
DMMKU – Don’t Make Me Kick yoU
DYHAP – Do You Have A Point(?)
GAFM – Get Away From Me
IC – I’m Confused
ICTT – I Can’t Type Today
IDC – I Don’t Care
ITF – In The Face
IHMC – I Hate My Computer
IYPKB – Is Your Period Key Broken(?)
IYSS – If You Say So
FTMTN – For The Millionth Time, No
FTTTN – For The Thousandth Time, No
GAFM – Get Away From Me
GTB – Going To Bed
IASG – I Ate Something Gross
IDC – I Don’t Care
IDK – I Don’t Know
IDTS – I Don’t Think So
IUOK – If yoU Only Knew
IYL – It’s Your Loss
IYSS – If You Say So
MBFA – My Butt Fell Asleep
MFG – Mining For Gold
MMGB – My Mind’s Gone Blank
NEIYPM – Not Even If You Paid Me
OIYWW – Only If You Want (to) Win
OOTH – Out Of The House
OOYM – Out Of Your Mind
PTMYJ – Please Tell Me You’re Joking
QBS – Quit Being Stupid
SIPO – Sorry, I Passed Out
TAS – Take A Shower
TWTF – That Was Too Funny
WTB – Went To Bed
WTN – Way Too n00b, or What The n00b
YCBS – You Can’t Be Serious
YDWN – You Don’t Want (to) Know
There we go, just a sampling of the many many acronyms floating around the IRC channels. Happy chatting!