Top Definition
Acronym for the interjection "oh, my mother fucking god". Commonly used as a quick way to express alarm, amazement, or dismay.
...then i was liek ommfg cos she was such a hottie and...
by mepmep November 02, 2003
1 more definition
Oh my mother f*cking God
ommfg, did you see that
by XAmberxSixxX September 04, 2008

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