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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A phrase commenly used in youtube poopby gay luigi in the cd-i game, Hotel Mario, in which "she" is Princess Peach. This is sa..