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pronounced Seth-a-bee, like wannabe.

A person (usually male) who for some reason tries to be like Seth Cohen from the OC.
Bill: 'Wow, Jimmy really likes comics now, doesn't he? He used to play football but now he's a real geek.'

Marie: 'yeah, he's a real Sethabe!'
by Vinnie (captain) May 18, 2007
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