OMG

The abbreviation for the genetic disease "Oversized Male Genitals", in which the genitals are both very long and very thick (commonly mistaken for "Oh my God!").

OMG sufferer: Dad I have something to tell you.
Father: OMG! You're gay!
OMG sufferer: No Dad... I have an OMG.
Father: I knew that you would get that from me.

by IGotaOMG September 6, 2009

OMG

Means Oh My God usually used on chats and ond the internet

OMG! I don't belive it

by ablazehustla February 4, 2010

OMG

OMG is the scaled down version of oh my god

OMG look what Sandham has done to the pie

by Dimebag4life May 21, 2008

OMG

oh my god. the most commonly used blasphemy in the world. sometimes you sound really stupid using it and other times it is quit appropriate. but mostly it helps fill space in an argument.

person 1 : i'm so fat.
person 2: OMG! you weigh 99 pounds get over it!

by KiKi_14_14 July 5, 2009

OMG

"Oh my god"
(or OMFG meaning "Oh my fucking god")

Person A: Guess what?
Person B: What?
Person A: I went to the Green Day concert!
Person B: OMG, that is so awesome!!

by crystal-anne July 16, 2006

OMG

It Is Commonly Mistaken For The Term, "Oh My God" But Trully It Means, "Oh My Gerard" As In Gerard Way. Because He Rocks. And Is Awesomely Awesome.

Could Also Be Written As OMGW.

--------
Me: OMG (Oh My Gerard) I Saw MCR Live In Auckland!
Other Person: WTF?!? hooz MCR???nnd hooz liek, geRawrd?? Aww, I brokd a naiel!!!!!
Me: *Hits Other Person On Head With Shovel* Bitch

by Mini Raleigh January 12, 2008

OMG

More goddamned instant messenger lingo used by bubbly/retarded pre-teen and teenage girls (and flamers) who cannot type. This is also sometimes spoken verbally by those that don't have full command of the english language.

A blonde talking to girl on instant messanger-
"OMG! You, like, kissed, like, a boy? Like, that is, like, so, like, gay."

by Fatass February 25, 2003