M：
M8T = Mate
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

N：
N = And/Know/Now
NAK = Nursing At Keyboard
NAZ = Name, Address, Zip (also means Nasdaq)
NBD = No Big Deal
NBIF = No Basis In Fact
NFI = No Fing Idea
NFW = No Fing Way
NIFOC = Nude In Front Of The Computer
NM = Never Mind
NMP = Not My Problem
NMU = Nothing Much You
NOYB = None Of Your Business
NP = No Problem
NQOCD = Not Quite Our Class Dear
NRG = Energy
NRN = No Reply Necessary
NYCFS = New York City Finger Saluet
O：
OAUS = On An Unrelated Subject
OBTW = Oh, By The Way
OIC = Oh, I See
OICU = Oh, I See You
OMDB = Over My Dead Body
OMG = Oh My God/Oh My Gosh
ONNA = Oh No, Not Again
OOC = Out Of Character
OOTB = Out Of The Box/Out Of The Blue
OT = Off Topic
OTOH = On The Other Hand
OWTTE = Or Words To That Effect
OZ = stands for "Australia"

P：
PEBCAK = Problem Exists Between Chair And Keyboard
PEM = Privacy Enhanced Mail
Pic = Picture
PIMP = Peeing In My Pants
PITA = Pain In The Ass
PLS/PLZ = Please
PMFJI = Pardon Me For Jumping In
PO = Piss Off
POS = Parents Over Shoulder
POV = Point Of View
PPL = People
Pro = Professional
PS = By The Way/Photoshop

T：
TAH = Take A Hike
TANSTAAFL = There Ain’t No Such Thing As A Free Lunch
TARFU = Things Are Really Fed Up
TDTM = Talk Dirty To Me
TEOTWAWKI = The End Of The World As We Know It
TFN = Thanks For Nothin’
THX/TX/THKS = Thanks
TIA = Thanks In Advance
TIAIL = Think I Am In Love
TIC = Tongue In Cheek
TLA = Three Letter Acronym
TLGO = The List Goes On
TM = Trust Me
TMI = Too Much Information
TMTOWTDI = There’s More Than One Way To Do It
TPTB = The Powers That Be
TSR = Totally Stuck in RAM
TTFN = Ta Ta For Now
TTT = That’s The Ticket/To The Top
TTUL/TTYL = Talk To You Later
TWHAB = This Won’t Hurt A Bit
TY = Thank You
TYVM = Thank You Very Much

U：
U = You
UR = Your
U R = You are
unPC = unPolitically Correct
URYY4M = You Are Too Wise For Me

V：
VFM = Values For Money
VG = Very Good

W：
WAG = Wild Ass Guess
WAI = What An Idiot
WB = Welcome Back
WCA = Who Cares Anyway
WDYS = What Did You Say?
WDYT = What Do You Think?
WE = Whatever
WEG = Wicked Evil Grin
WG = Wicked Grin
WGAFF = Who Gives A Flying F
WIIFM = What’s In It For Me?
WIT = Wordsmith In Training
WITFITS = What in the F is this Sh
WOG = Wise Old Guy
Wot/Wut = What
WRT = With Respect To/With Regard To
WTF = What The F
WTG = Way To Go!
WTSDS = Where The Sun Don’t Shine
WYMM = Will You Marry Me
WYP = What’s Your Problem?
WYRN = What’s Your Real Name?
WYS = Whatever You Say
WYSIWYG = What You See Is What You Get
WYT = Whatever You Think

X：
X U = Kiss You

Y：
Y = Why
Ya = You
YA = Yet Another
YAFIYGI = You Asked For It You Got It
YDKM = You Don’t Know Me
Yep/Yup = Yes
YGBK = You Gotta Be Kiddin’
YMMV = Your Mileage May Vary
YNK = You Never Know
YOYO = You’re On Your Own
YR = Yeah, Right
YSYD = Yeah, Sure You Do
YTTT = You Telling The Truth?
YYSSW = Yeah Yeah Sure Sure Whatever