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 4, 2009

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

OMC

Off my charts

Rate~omc

by Phoebe Simone April 10, 2015

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

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 6, 2010

OMC!

oh my cow!!

OMC!! Did you just say semen???

by Hooke April 2, 2009

OMC

Shock at testing positive for the Omicron variant of Covid.

"I sincerely hope you're fully vaccinated"
"Who? Me? ... Why?"
"Your test came back positive. But relax. It will only kill you if you're unvaccinated,"
"OMC"
"OMG! Please tell me..."
"I mean... I figured... if Marjorie Taylor Greene didn't get the shot... or wear a mask... no need, right?"

by Monkey's Dad December 31, 2021