What is Sinbox?
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Sinbox (noun):
A vagina - particularly one belonging to a female co-worker, or a girl you meet on the internet.
Leroy: "What's up, dude? How'd your date with that chicky from work go???"
Ian: "Oh maaan! I totally delivered in her sinbox!"
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AMD. (from The Inquirer). Compare to chipzilla.
We all wonder when chimpzilla's stock price will overtake chipzilla's
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a rule stating that if you are more than 3 rivers away from the person you are dating then all faithfulness to your significant other is..