Top definition
knowledge of pornography. From 'porking (heavy fucking)' and 'knowledge'.
Pornstars are supposed to be full of porknowledge.
by uttam maharjan October 29, 2010
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Jul 29 Word of the Day
Someone who used to be a potential girlfriend/boyfriend, but no longer is.
Tim: Zack, is that your exgirlfriend?
Zack: No, she's an expotential. We never actually dated...
by brownsuite September 24, 2011
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