What is Sig O?
1.
A shortening of 'Significant Other;' particularly useful when addressing a mixed gender group with varied marital statuses. Frequently pluralized: sig o's.
You guys should come over tonight for the bowling tournament, and bring your sig o's.
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1.
When someone does something in a manner such as an asshole would do.
Mike's asshole-elousy became apparent when he kicked me in th..