maghanap ng salita, tulad ng bukkake:
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.
ayon kay badandy519 ika-25 ng Agosto, 2009

Words related to ninja mail

inbox mail ninja office secret