Ok I'm adding IMO = in my opinion and IMHO = in my humble opinion
and ROFLMAO: Rolling on floor laughing my a** off
APOP: Almost Perfectly on Program
AWOP: Absent Without Posting
BBL: Be Back Later
BF: Boyfriend
BLT's: Bites, Licks, and Tastes
BTDT: Been There, Done That
BTW: By the Way
CRS: Can't Remember Sh**
DD: Darling Daughter
DH: Darling Husband
DIL: Daughter in Law
DS: Darling Son
DW: Darling Wife
ETA: Edited to add
FF: Fat Free
FIL: Father in Law
FYI: For Your Information
HNS: High Nutrient Supplement
IMO: In my opinion
IMHO: In my humble opinion
ICBINB: I Can't Believe It's Not Butter
JK: Just Kidding
KOKO: Keep On, Keeping On
LMFAO: Laughing My F****** A** Off
LMAO: Laughing My A** Off
LOL: Laughing Out Loud
MIL: Mother in Law
MILFH: Mother in Law From H***
MOTS: More of the Same
MQ: MetaQuik
MRC: Metabolic Research Center
NSV: Non Scale Victory
Onederland: When you go below 200, into the 100's
OP: On Program
ROFL: Rolling on the Floor Laughing
ROFLMAO: Rolling on floor laughing my a** off
SIL: Son in Law
TMI: Too Much Information
TOM: Time of the Month
Twoterville: When you go below 300, into the 200's
WB: Welcome Back
WI: Weigh In