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The owning of an HCAF member, most specifically n00bz, by GuitarMan216. The term was coined by GuitarMan216's past extreme use of hair gel which resulted in an uncanny porcupine resemblance. There are a couple alternate spellings, such as "Porcupwnt"
666Dave666: Why the fuck are you so happy?

GuitarMan216: Because yuor Mom iz under mah desk givin me teh head.

Weathered: Porcupwned.
by GuitarMan216 February 04, 2008
It's an extreme version of pwned.
Dude, you got porcupwned!!
by steffinb January 27, 2003