Top definition
Like an NDA ("Nondisclosure Agreement") that you agree to when one of your friends who works in a classified field (entertainment, government) let's you in on something not appropriate for public ears or eyes.
My friend told me what the monster looks like in the new J.J. Abrams movie because she works on the set, but I can't repeat it because I'm under a Friend-D-A.
by Snarfblatt May 14, 2011
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