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1.
ogm
1. A misspelling of heavily overused word 'omg' (Oh My God)
2. Short for 'Official Giraffe Magazine'
examples:
1. ogm taek taht bicth!!!1
2. OMG I just got the latest OGM!
by elohop3e August 22, 2006
 
2.
OGM
OGM outgoing message. The message you hear on the answering machine when nobody picks up the phone.
Ideal way to end a relationship.
"The OGM on our machine began with 'we're not here now', but you went and changed we to no one, do you mean us or me?"
by Dutch Moose February 25, 2008
 
3.
OGM
Oh Gracious My
OGM did you know they have a captain planet website??? I always wanted to be a planeteer lol
by cheeto_kid December 28, 2009
 
4.
OGM
Interchangeable with the more popular OMG and used primarily by the Blond, the ditzy, and older women who are trying to sound cool, young and hip.

Can also mean Oh God, Motherfucker!

Most often followed by an exclamation point as in OGM!

Pronounced O G M
OGM, like I was going to wear my red gel nail polish today too! Imagine what a po faux that would have been if we both wore it to the same party?

or

OGM, that stupid bitch doesnt realize gel nail polish lasts for weeks! She's a total faux pas!
by jayniney January 30, 2012
 
5.
ogm
An anagram of the acronym 'OMG'.

ogm "Oh God My" generally carries the same meaning as omg "Oh My God".

It is used in online chat and social sites (twitter, tumblr etc.) as a ditzy/ much cooler alternative to 'omg'.
Example: ogm what is that?!!!!11!!1!!!!1
by OGM September 06, 2012
 
6.
OGM
An acronym, meaning "Oh God Ma". Similar to the popular AIM expression "OMG", or "Oh My God". This acronym can be used in chatting services such as AIM, or Yahoo Messenger. It is used to describe the pure excitement of the event or can just be used to humor yourself and confuse your chatting partner.
by Caryna November 13, 2007
 
7.
ogm
A term commonly used on an online game called "Secrets of Mirage X"... the creator Scorpio once said "ogm" on the forums and now everyone has been saying it since.
It is a misspelling of "omg"; meaning oh my god.
AWP: Ogm no on knows how to spell.
Splasm: I know ogmz...
by Splasm August 07, 2005