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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
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3
Possibly the most irritating piece of chatroom vernacular in existence. Often used by teenage girls in chatroom who, for some reason, punctuate their sentences with "Like", "Totally", "soooooooo" and "Lolz."

Correct Response - "Speak proper, or STFU, N00B!"
"OMG WTF! u nevaz did dat, like, dats like, fkin gay! if i did dat id be like, wowz!!!!" - Actual AOL chat quote.
by KHD August 27, 2003
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4
Usually said in chat rooms or online forums etc. Short form of "OH MY GOD!!!"
"OMG"
"WTF?"
"LOL"
"WTF?"
"ROFL!"
etc
by Kristjan May 13, 2005
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5
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
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6
A very silly E Magazine from Yahoo with rubbishy stories that would only entertain preteen girls
This week in OMG! :

Katy Perry gets stung by a bee
Simon Cowell slips on a banana skin
Kate Middleton shops in New Look
by Deathflower November 13, 2012
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7
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
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