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1. F.D.A.
Facebook Displays of Affection- When couples excessively flaunt their relationship over Facebook.
Girl 1: Have you seen how many times Max wrote on Rachel's wall yesterday? & how many pictures she uploaded of the two of them?

Girl 2: Seriously. Their F.D.A. is disgusting. Let's get some class and not pretend we are married for five seconds.
2. F.D.A.
fucking dumb asses (F.D.A is an Acronym)
They are life time members of the F.D.A.
3. F.D.A.
Acronym for "Fucking Die Already," an abbreviation for the more exasperated use of J.F.D.A., which means "Just Fucking Die Already."

Usage can be as an interjection, or an imperative (i.e. a command).
(Imperative)
Jesus H. Christ, would you F.D.A. - you're driving 10 miles under the speed limit, fucktard!

(Interjection)
Oh, F.D.A., this asshole is riding the brake in the fast lane again.
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