Abbreviation for "Oh my God" or "Oh my gosh". Often used by teenage girls while texting, and using any other sort of online chatting. Used so often it has now become redundant.

Can also be substituted as "omigosh", "omigod", or "omigawd".

Can become highly annoying when said a lot, along with other words such as "like", "totally", "lolz" in a chatroom.
Girl 1: i just bought new shoes
Girl 2: omg!!! are they hot?
Girl 1: like, totally!!!!

Girl 1: omg did u c that guy over there? hes like, so hot!
Girl 2: tottttally
Girl 3: no hes not! hes ugly! lolz omg i cant believe u guys thought he was hot
by one hundred percent tomboy January 30, 2011
Net-centric abbreviation for the popular exclamation "Oh my God!" (generally used in conversations to exclaim surprise or disgust). Most commonly used by teenage girls who find it depressingly hard to type out an entire word. Reinforces assumptions that humans seem to be getting dumber from generation to generation. See also u, like.
Teenage idiot: "like OMG did u c dat totaly cutte gy? he wuz like, so cutte"

Silent then proceeds to sock her in the face.
by Silent April 21, 2003
Used by retarded teenagers.
They say it stands for OH MY GOD, but they really mean it stands for OBSERVE MY GAYNESS
Retarded Teenager: OMG OMG OMG OMG!!!!
Me: I am
Other Person: Hey dipshit is it really too hard for you to spell Oh My God
by Scribbler March 18, 2005
An acronym of the Phrase Oh my God, originated from online chat, and is commonly used in online games and web chat.
Chat: OMG she is so hot!

Gaming: Liek OMG i pwned you!
by Terry Baldock April 04, 2005
Acronym. Generally "Oh my God!" For some people that don't like taking the Lord's name in vain, "Oh my gosh!" For Googlists, "Oh my Google!"
OMG there's a lot of pages on the internet!
by mikeejimbo July 13, 2006
Oh My God
Oh
My
God
also see OMFG
OMG I just got laid!
by F4T4L September 20, 2005
A internet abbrieviation that has managed to break communication boundaries and is spoken by some in public.
Simply put OMG means, Oh my god!

Person 1: "Look at her outfit, can you believe someone would wear that?"

Person 2: "O M G. , have they even heard of the word fashion."
by Sean Big Red July 01, 2006
Mostly used by young, immature teenage girls. Makes you look like a blonde idiot.

Acronym for:

1. Oh My God
Oh My Gosh
2. Oh My Goodness
3. Oh My Goth
4. Oh My Gayness
5. Oh My Genitals
1. OMG! Dan Radcliffe is like, so effin hott!!
2. OMG, I left the kitchen on fire!
3. OMG. That skirt is very gothtastic. Bring in Halloween, 'cause we're going to throw a gothtastic party. OMG!
4. Ooh, OMG! <3333 Buttsecks! ^-^
5. Faster, you're making me cum! OMG!
by Panic! At The Gay Bar March 25, 2006

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