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That feeling you get when leaving the theater after watching Harry Potter and the Deathly Hallows Part 2. You can also receive PPD from finishing the last novel in the Harry Potter series but this wasn't as bad because you always had the option of waiting for the movie to come out.
Guy 1: (upon exiting the movie theater) Dude, that Harry Potter movie was epic! I can't wait for the next one to come...oh.

Five days later

Guy 2: What's wrong with Guy 1, he hasn't been himself lately.
Guy 3: He's suffering from Post Potter Depression (PPD), last night he tried to kill himself by shouting Avada Kedavra and pointing a twig at his face.
by ncalderonhunt July 21, 2011
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