On bulletin boards and discussion forums you'll see a lot of abbreviations and acronyms. Some of 'em are practically impossible to decipher without a decoder ring, so we've put together a short list of the most commonly used ones. This is by no means a complete list, as new ones are 'born' almost daily, but this list should serve to help you get started. If you have an acronym that you think ought to be listed here, us and we'll add it to the list.

BIC = Best Interests of the Child
BIL = Brother In Law
BF = Biological Father
BM = Biological Mother
BRB = Be Right Back (used in chat)
BTDT = Been There, Done That
BTW = By The Way
CASA = Court Appointed Special Advocate
CO = Court Order
COC = Change Of Custody
CP = Custodial Parent
CPS = Child Protective Services
CS = Child Support
CSE = Child Support Enforcement
DCS = Department of Child Support
DCW = Dept. of Child Welfare
DH = Divorced Husband or Darling Husband
DW = Divorced Wife or Dear Wife
ED = Egg Donor (an uninvolved mother)
EOM = End Of Message
FOC = Friend Of The Court
FERPA = Family Educational Rights & Privacy Act
FIL = Father In Law
FOR = Father Of Record
FOS = Full Of Sh*t
(g) = (grin)
GAL = Guardian Ad Litem
GFG = Gift From God (refers to a child OR a 'stuck-up' ex)
GP = Grand Parents
HOH = Head Of Household
FOC = Friend Of the Court
FIL = Father In Law
FWIW = For What It's Worth
IMHO = In My Humble Opinion
LFH = Lawyer From Hell
LMAO = Laughing My Ass Off
LOL = Laughing Out Loud
MIL = Mother In Law
MSA = Marital Settlement Agreement
MSOL = Marital Standard Of Living
NCP = Non Custodial Parent
NM = No Message
NT = No Text (same as NM)
OM = Other Man
OW = Other Woman
OSE = Office of Support Enforcement
OSD/OSS = Oldest Step Daughter/Oldest Step Son
PAS = Parental Alienation Syndrome
PBFH = Psycho Bitch/Bastard From Hell
PF = Paternity Fraud
PFV = Paternity Fraud Victim
PKPA = Parental Kidnapping Prevention Act
QDRO = Qualified Domestic Relations Order
RO = Restraining Order
ROG = short for 'Interrogatories'
ROTFLMAO = Rolling On The Floor Laughing My Ass Off
SAHM = Stay At Home Mom
SC = Step Child or Children
SF = Step Father
SM = Step Mother
SD = Step Daughter
SD = Sperm Donor (an uninvolved father)
SIL = Sister In Law
SKIDS = Step Kids
SS = Step Son
STBX = Soon To Be Ex
SO = Significant Other
SIL = Sister In Law
TRO = Temporary Restraining Order
UIFSA = Uniform Interstate Family Support Act
UCCJA = Uniform Child Custody Jurisdiction Act