From Encyclopedia Dramatica
An abbreviation of "Oh My God", OMG is the internet' equivalent to "holy shit". Usually notes total and complete astoundment. OMG can also be used as a greeting in the place of "hi" or "sup". As of the newly released Web 2.0, ZOMG is now the accepted abbreviation.
To fat fucks who can't stop thinking about food, it stands for "zero milligrams" when seen on Nutritional Facts on any food item.
- OMD! - Oh my Days (for chavs, townies and cheap Leicester Whores)
- OMFG - Oh My Fucking God
- OMGG - Oh My Good God!
- OMGGG - Oh My Good Golly Gosh!
- ZOMG - Zeus, oh, my God.
- OMFJ - Oh my Fucking jesus.
- OMFJK - Oh my Fucking jesus khrist.
- OMGWTF - Oh My God What The Fuck
- OMGWTFBBQ - Oh My God, What The Fuck. Bitch Be Quiet.
- OMGLOL - Oh My God Laughing Out Loud
- OYG - Oh Your God (popular among atheists and bending units)
- OJ - Former football player and assassin
- DM! - Dios Mio! (popular among chicas)
- OMS - O My Satan (used and popular among Satanists and the gr1m who are ov the tr00 kvlt)
- AMG - Ach Mein Gott!
- OMY - Oh my Yehovah (used by secular Jews)
- OTN - Oh the name (used by religious Jews)
- OMA - Oh my Allah (used by Muslims)
- AMD - Ah Mon Dieu!
- OMIGAWD - Oh My God, Valley girl style
- OMMG - Oh my many gods.
- OMZ - Oh my Zeus.
- OMD - Oh Meus Deus, used in old Rome. Popular with the Catholic Church today.
- OMC - Oh My Cid, for Final Fantasy Nerds
- OMX - Oh My Xenu, for Scientologist faggots.
- OMJ - Oh My Jonas, used by 12 year old girls who love the Jonas Brothers.
- OME - Oh My Edward, used by sex-starved Twilight fantards.
- OMB - Oh My Buddha
- OMGHL - Oh My God, Hummer Limo!
- OMSFFOAC- Oh My sweet festering fuck on a cracker
- H - Härregud!
While OMG means "Oh My God" 99% of the time, it can be used to mean other things depending on context. Here is a partial list:
- Oh My God
- Oh My Goddess (also Discordian; also Wiccan; also lame)
- Oh My Goddess! (anime)
- Oh My Goodness (Christian variant)
- Oh My Gosh (Christian variant)
- Oh My Gold (Jew/Leprechaun variant)
- Old Man Genitals
- Overly Managed Garden
- Over My (Fucking) Garage! (a final warning before murdering someone; this person isn't messing around)
- Outlaw Motorcycle Gang
- Object Management Group
- OW My Genitals
- Objecting Massive Grapes
- Other Meanings [are] Gay
- Oh Eme Gee (alternate pronunciation)
- Old Man Gangbang
- Only Men Gangbang
- On My Gigantaur (On my seriously massive penis, eg "hey why don't you try that On My Gigantaur")
- Original Midget Gangbang (Famous Hentai for Wapanese)
- Octopus Mongling Guru