OMG(Oh My God) for Warriors (a fantasy series by Erin Hunter)fans, it stands for Oh My StarClan. Starclan are the warrior ancestors/gods of the Warrior cats. Generally used when Warriors fans are chatting.
OMSC, Nightcloud should definitely go die in a hole.
by Checkmate In T November 4, 2013
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Like "Oh my god" for Hunger Games fans, stands for "Oh my Suzanne Collins!"

Typically used by people who affiliate with the religion of Hunger Games worship.
OMSC, Peeta Mellark is so perfect!
by Katniss E March 27, 2013
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