Sinbox (noun):
A vagina - particularly one belonging to a female co-worker, or a girl you meet on the internet.
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!"
Ian: "Oh maaan! I totally delivered in her sinbox!"
by ENLS March 09, 2009
When the inbox for your internet email address becomes loaded with junk mail because of irresponsible internet surfing.
by Ereck Flowers May 03, 2019