A Leetspeak derivative of Pr0n, but a step up, since 1>0. Usually refers to pornographic material of a higher quality, either in the sense of containing an in depth storyline or a video recorded in high definition.
Person 1: Dude, did you see the size of the Pr0n folder on the server?
Person 2: No, that one was lame. I went and downloaded stuff from the Pr1n folder, it was at least five times larger, and better. Plus it was all in HD too.