O - Over (completion of communication)
O - Over (to you)
O:-) - Angel
O4U - Only for you
OAO - Over and out
OAS - On another subject
OAS - One-to-all scatter
OATUS - On a totally unrelated subject
OAURS - On an unrelated subject
OB - Obligatory
OB - Oh brother!
OB, OBAB - Oh baby!
OBE - Overcome by events
OBE - Overtaken by events
OBJ - Object
OBJOKE - Obligatory joke
OBO - Or best offer
OBTW - Oh, by the way
OC - Own character
OCD - Obsessive compulsive disorder
OD - Oh dear
OD - Over drive
OD - Overdose
ODTAA - One damn thing after another
OF - Old fart (someone who has been around for a while)
OF - On fire
OFIS - On floor with stitches
OFS - One finger salute
OH - Off hook
OHMIGOD - Oh my god
OI - Operator indisposed
OIC - Oh, I see
OICU812 - Oh, I see you ate one too
OJ - Obligatory joke
OJ - Only joking
OJT - On the job training
OK - All correct
OK - Okay, all correct
OK - Only kidding
OL - Old lady (significant other, wife, girlfriend)
OL - Out of luck
OLL - On-line love
OLL - Only laughing a little
OM - Object manager
OM - Oh my
OM - Old man (significant other, husband, boyfriend)
OM - Other man
OMB - On my back
OMDB - Over my dead body
OMG - Oh my God
OMG - Oh my goodness
OMG - Oh my gosh
OMIK - Open mouth, insert keyboard
OML - Oh my lord
OMT - One more time
ON4IT - On for it
ONAW - Oh no! another wedgie
ONID - Oh no, I didn't
ONNA - Oh no, not again!
ONNTA - Oh no, not this again
OO - Headlights on
OO - Over and out (end of communication)
OOAK - One of a kind
OOB - Out of band
OOC - Out of character
OOF - Out of facility
OOH - Out of here
OOI - Out of interest
OOL - Out of luck
OOMOOS - Out of mind, out of sight
OOO - Out of office
OOP - Out of print
OOSOOM - Out of sight, out of mind
OOT - Out of time
OOTB - Out of the blue
OOTB - Out of the box (brand new)
OOTC - Obligatory on topic comment
OOTD - One of these days
OOTO - Out of the office
OOTQ - Out of the question
OP - Operation
OP - Output
OPL - Obvious panty line
OPM - Other people's money
OPP - Other people's problems
OS - Operating system
OSIF - Oh shoot, I forgot!
OSIM - Oh shoot, it's monday
OST - On second thought
OSU - Officially sanctioned user
OSU - Oh, shut up
OT - Off topic
OT - Other topic
OT1H - On the one hand
OTA - Out the airlock
OTA - Over the air
OTB - Off to bed
OTB - On the ball
OTBE - Over taken by events
OTBE - Over taken by events (military)
OTBS - On the bright side
OTC - Over the counter
OTD - Out the door
OTE - Over the edge (beyond common sense or beyond good taste)
OTF - Off the floor
OTF - On the floor (laughing)
OTF - On the phone
OTFL - On the floor laughing
OTFM - Only the facts, ma'am
OTGH - On the gripping hand
OTH - Off the hook (something is really popular)
OTK - Over the knee
OTL - Out to lunch
OTMH - Off the top of my head
OTN - On the net
OTOA - One thing or another
OTOH - On the one hand
OTOH - On the other hand
OTOMH - Off the top of my head
OTOOH - On the other other hand
OTOT - On the other tentacle
OTP - On the phone
OTR - Off the rack (saying that something is outside the ordinary)
OTR - Old time radio
OTR - On the road
OTT - Over the top
OTTH - On the third hand
OTTOMH - Off the top of my head
OTTOMHAROOB - Off the top of my head and rolling out of bounds
OTW - Off the wall
OTW - Off to work
OTW - On the way (I've sent a file to you, it's 'On the way')
OTW - On the whole
OURS - Open users recommended solutions
OUSU - Oh, you shut up
OUTS - Output string
OV - Overflow
OVA - Over
OVR8D - Overrated
OW - Oh well
OW - Other woman
OWTTE - Or words to that effect
OX - Hug & kiss
OXOXO - Hugs & kisses
OXOXOXOXO - Hugs & kisses, more
OYO - On your own
OZ - Australia
OZZIE - Australian
P
P&C - Private and confidential
P/T - Part time
P2C2E - Process too complicated too explain
P2P - People to people
P2U4URAQTP - Peace to you for you are a cutie pie
P911 - My parents are in the room
P911 - Parent alert
P911 - Parent emergency
PABG - Pack a big gun
PABG - Packing a big gun
PAL - Parents are listening
PANS - Pretty awesome new stuff
PAW - Parents are watching
PB - Potty break
PB - Push button
PB&J - Peanut butter & jelly
PBB - Parent behind back
PBD - Programmer brain damage
PBE - Prompt by example
PBM - Play by mail (games)
PBNFL - Possible, but not friggin' likely
PC - Politically correct
PC - Private chat
PCB - Please call back
PCM - Please call me
PCMCIA - People can't master computer industry acronyms
PCME - Please call me
PCO - Please carry on
PCT - Politically correct thought
PCYLIHOONL - Please cross your legs, I have only one nail left
PD - Public domain
PDA - Personal display of affection
PDOA, PDA - Public display of affection
PDOMB - Pulled directly out of my butt
PDQ - Pretty damn quick
PDS - Please don't shoot
PDS - Please don't shout (all capital letters is rude)
PDSTM - Please don't shout the message
PEBCAK - Problem exists between chair and keyboard
PEBKAC - Problem exists between keyboard and chair
peeps - People
PEKUSH - Press every key until something happens
PEST - Please excuse slow typing
PF&HOMW - Printed, framed and hanging on my wall
PFM - Pure friggin' magic
PFY - Pimply faced youth
PG - Parental guidence
PG - Pregnant
PG - Prophecy girl
PGA - Patches gratefully accepted
PHAT - Pretty hot and tempting
PHB - Pointy haired boss (Dilbert)
PhD - Piled higher and deeper
PHD - Push here dummy (type of camera)
PI - Politically incorrect
PIBKAC - Problem is between keyboard and chair
PIC - Politically incorrect
PICNIC - Problem in chair, not in computer
PIF - Paid in full
PIMP - Peeing in my pants
PIMPL - Peeing in my pants laughing
PIN - Person in need
PIR - Parent in room
PITA - Pain in the acronym
PITA - Pain in the anatomy
PITA - Pain in the backside
PITA - Pain in the behind
PITB - Pain in the butt
PITBY - Put it in their back yard
PITMEMBOAM - Peace in the middle east my brother of another mother
PITN - Pain in the neck
PIU - Pimp it up
PJW - Please just wait
PK - Pack
PKB - Pot (calling the) kettle black
PKOC - Passionate kiss on the cheek
PKOL - Passionate kiss on the lips
PL - Plus
PL&ED, PL& - Planned
PLBKAC - Problem lies between keyboard and chair
PLMK - Please let me know
PLMKO - Please let me know, ok?
PLOKTA - Press lots of keys to abort
PLONK - Please leave our newsgroup, killfiled!
PLS, PLZ - Please
PLS4GIVME - Please forgive me
PLSE - Please elaborate
PLZ 4GV mE - Please forgive me
PM - Private message
PMBI - Pardon my butting in
PMETC - Pardon me etc
PMF - Pardon my french (!@#$%^)
PMFBI - Pardon me for butting in
PMFI - Pardon me for interrupting
PMFI - Problem magically fixed itself
PMFJI - Pardon me for jumping in
PMFJIB - Pardon me for jumping in but
PMFJIH - Pardon me for jumping in here
PMI - Pardon my ignorance
PMIGBOM - Put mind in gear, before opening mouth
PMJFIH - Pardon me for jumping in here
PMJI - Pardon me, jumping in (when you interrupt a conversation)
PML - Page me later
PML - Pee myself laughing
PMP - Peed my pants
PMP - Peeing my pants
PMYMHMMFSWGAD - Pardon me, you must have mistaken me for someone who gives a damn
PNATMBC - Pay no attention to man behind the curtain
PNCAH - Please, no cursing allowed here
PND - Possibly not definitely
PO - Pee off
PO$BL - Possible
POA - Plan of action
POAHF - Put on a happy face
POAK - Passed out at keyboard
POC - Point of contact
POC - Prisoner of chat
POI - Point of interest
POL - Plain outta luck
POM - Phase of the moon
POME - Prisoner of mother England
PONA - Person of no account
POOF - Good-bye
POOF - Has left the chat room.
POOF - I have left the chat
POOF - Leaving the room - goodbye
PORNADO - Large amount of pornographic content
POS - Parent(s) over shoulder
POS - Point of sale
POSSLQ - Person of opposite sex sharing living quarters
POST - Power on self test
POTB - Pats on the back
POTC - Peck on the cheek
POTS - Parents over the shoulder (parents are watching, I can't really talk)
POTS - Plain old telephone service
POV - Point of view
PP - People
PPAST - Please provide a simple testcase
PPIOSPE - Please post instead of sending private email
PPL - People
PPP - Petty pet peeve
PPU - Place of primary use
PRL - Parents are listening
PROC - Procedure
PROG - Program
PROLLY - Probably
PRT - Party
PSA - Public show of affection
PSB - Pretty stupid boy
PSG - Pretty stupid girl
PSY - Please stop yelling
PT - Physical training
PTB - Please text back
PTB - Powers that be
PTL - Praise the Lord
PTLAPTA - Praise the Lord and pass the ammunition
PTM - Please tell me
PTMM - Please, tell me more
PTMY - Pleased to meet you
PTMYA - Pleased to make your acquaintance
PTO - Please turn over
PTP - Pardon the pun
PTSS - Post traumatic stress syndrome
PTT - Push to talk
PTUM - Please tell us more
PU - That stinks! (something smells)
PUASU - Put up and shut up
PUKS - Pick up kids
PUNTS - People of utterly no tactical significance (military term)
PV - Postitive vibes
PW - Password
PW - Pathetic wanker
PW - Powwow
PWP - Plot, what plot?
PWR - Power
PWYP - Practice what you preach
PXT - Please explain that
PYS - Pack your stuff
P-ZA - Pizza