Top definition
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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Dirty Sanchez Plush

It does not matter how you do it. It's a Fecal Mustache.

Buy the plush