Oh my fucking gosh (dont use God!Its Bad to use God's name in vain)
used when ur REALLY suprised!
Ppl txting:

Chick: Watcha Doin?

Dude: IDK

Chick: Whats ur sis's name?

Dude: IDK

Chick: OMFG! U DONT KNOW ANYTHING!
by some efin biotch May 24, 2011
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Phrase attributed to Monica Lewinsky. Common urban slang denoting surprise. Acronym for "On My Freaking Gown!?!?!"
"So, he snuck up behind me, and I was like, "No!," I mean, OMFG!"
by Crammy McSlander June 17, 2006
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similar to omg, omfg is pronounced o-mm-ffeh-geh. to expres even more shock.
by wheatley boy January 3, 2009
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a handy mnemonic for remembering the ingredients of a greek salad
OMFG: Olives, Mayo, Feta, Garlic.
by Lt. Handjob September 10, 2005
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