What is Sinbox?
1.
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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Using a lunchroom tray to slide down an isle at Famous Players 8. You place the tray in front of you and while running down the isle, j..