To post-
pwn is to
pwn someone, then either:
a.
pwn them again in a short period of time.
or
b. bring up an instance of pwning someone, often bringing back the original pain/humiliation of being pwned.
a. (In x-box live)
n00b: I do believe you have defeated my character!
player:
Yeah! That's right! You got pwned!
(3 minutes later)
n00b: oh em gee! It seems as if you have defeated me again.
player: Oh yeah! POST-PWND!
b.
Dude 1: Hey, dude! Remember when you passed out on the floor and I shaved "loser" into your head?
Dude 2: Aww, man! Why'd you just have to post-pwn me?