"Post-Funny" - When something happens and it is not funny but when you think about it in the future it is.
David: Remember that lame joke you told?
Alistair: Haha. That was the best
David: It sucked so much but now it is funny.
David: Hahaha
Alistair: Now that is Post Funny
by Davidrsa December 30, 2011
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"Pls stop posting urban dictionary stuff they not funny"
"True"

Isaac saying urban dictionary posts aren't funny
by BuffBottomBuns March 14, 2017
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