The word comes from the 1997 music album by the band Korn. It's a play on the word pornography, and means nothing.
Also, the word is used in the Family Guy series, S17E18, when Peter is caught watching Kornography.com, which was Corn Pornography, showing a hot piece of corn, that was given a facial of butter. It was most likely gay corn pornography.

when you're hungover as shit after a spending a night drunk as a skunk