1 definition by thatoneguysfriend

A girl who is totally gorgeous but is also crazy, so half the time she's an adorable joker who will make you laugh and smile. While the other half a sado-masochist who will drive you insane and make you want to slam your head into a wall...and punch babies.
Dude1: Man that girl is hot but she's so bi-polar!
Dude2: Yea man, she's such a Karen!
by thatoneguysfriend December 31, 2010
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