OMC

O.M.C=Over mature child
Used to poke fun at someone who has a mature face but likes things normally associated with children or acts childishly.
Ben: Glenn, stop being so lame and childish, stop telling me about your adventures about you and your power ranger figurines, for god's sake, you are already 21.

Glenn: Mind your own business.

Ben:Whatever, how OMC can you get?
by Spentaz September 04, 2009
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OMC

To hang out with friends for a short period of time, usually for 45 - 90 minutes.
It is looked at as a bad thing to do, not very proper.
"yo can you chill today"
"I dunno, if anything it will be an OMC"
by Schnitzeled May 20, 2009
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OMC

Off my charts
by Phoebe Simone April 10, 2015
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OMC

Acronym of Oh My Chad, a variation of oh my god, originating in the Disney channel series Sonny With a Chance. Commonly used by screaming fangirls.
Person 1: Do you like the movie Starstruck?

Person 2: OMC, it's amazing!
by thequeenofallruralsuburbia August 10, 2010
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OMC

OH MY CUTENESS!
its like OMG but for cuties... or non-religious people..
Did you check out that boy? it was like totally OMC!
by emmzz September 06, 2010
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OMC!

OMC!! Did you just say semen???
by Hooke November 22, 2008
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OMC

OMC as well known as OFF MY COURT used when trashtalking people during certain roasts etc. you say it when you're cool enough to people like jake tey and lexy cant be saying this smh
Mike: u trash boi

Ryan: OMC OFF MY COURT TRASH XD
by OFF MY COURT April 17, 2018
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