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A second semester senior. Seniors in the second semester begin to stop caring about school work, and school in general, just looking towards their life ahead. Pronounced "S cubed"
Tom: Eh bro, did you do that stat homework?
Arnold: No way dude, I'm an S^3.
by rushringleader March 07, 2010
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Shit, Shower, Shave. The optimal method in which a man prepares to leave the house.
A: Hey, I'm going to John Doe's party? Are you coming?
B: Yeah, of course. Let me just S^3 first.
by mjrrkim September 07, 2012
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