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1.
One who is too cool to be hipster, and will therefore reject hipster styles and tastes. Post-posts, or pomo hipsters, are currently difficult to define only because they tend toward a slightly wider set of tastes than your average stereotype. The most important quality is that a post-post realizes the hippocracy of hipsterism and tries to overcome it. Post-posts will sometimes acknowledge the fact that they are post-post, and if called hipster, will sometimes
Person one: "Does this make me look too hipster?"

Person two: "You're wearing a polo; of course not."

Person one: "Does it make me look too preppy?"

Person two: "Oh my gosh, you are such a post-post!"
by Aspartame, 2nd Century Greece November 05, 2011
 
2.
(adv) beyond postmodern; exceedingly or terminally hip. Often used ironically.
"You're so post-post, why don't you go deconstruct your mother's combat boots?"
by Anarcissie May 28, 2008