Stands for "original character." A character created by a fanfic author or roleplayer. Said created character does not belong to the canon cast but is inserted anyway for entertainment.

Many OCs appear as long-lost family members, past lovers, or exchange students. These background stories provide alibis for the sudden appearance and previous absences of the OC.

OC may also stand for "other character," in this case representing an extremely minor character, introduced or mentioned but not extremely active in an original series.
I was reading a person's fanfic the other day. It was centric of their OC, but the original character they made up was pretty cool, so I didn't mind.

Ayame is an "other character" from Naruto.
by Madoka July 11, 2008
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original content

if you create jokes or memes on teh interwebs and thought of it all by yourelf, you created oc
ITT: we only pots OC!

Here's my OC ! what do you think of it?

You call that OC? i saw this pic weeks ago on reddit!
by pogoagogo April 27, 2013
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"Original Character"

Any character created by an individual that is original.
"Who is this person in your drawing?"
"That's my OC."
by OCer August 5, 2012
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Overclocking. To increase the speed of a computer's processor from its normal speed.
After OCing my quad-core, even my piece of shit Windows Vista loads fast!
by RandomFuckingName August 21, 2009
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Always being dumb ,most likely single and loves her bestfriends .she can be a crackhead too so watch out !
by Hellobeach458 June 7, 2020
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Out of Control.
Can be used to describe something crazy, extreme, frantic, or wild.
Your OC man! You slapped that bitch.
Man that party was OC.
Stop acting OC man.
by nomas March 1, 2004
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Open crib - party that is open to anyone - usually means alcohol, and drugs if teens are involved
The party is an OC
by Scout mom July 5, 2016
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