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Inter-office mail that shows up out of nowhere. It just magically appears in your inbox and you have no idea who left it.
I think Debbie left that ninja mail in my inbox again today, but I can never catch her in the act.
by badandy519 August 25, 2009
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May 18 Word of the Day
When you think up something brilliantly righteous while baked.
X: I had this great highdea last night
Y: You clearly were philosopher stoned.
by TripleWest September 03, 2012
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