Translation: A slick way of referring to adult films.
Proper Usage: "That's the teacher who fired because he had a hard drive full of Pokemon pr0n."

In the age of digital advertising, a great deal of sites are forced to curb the language of their users so they use special programs to block certain words. "Porn" is one of those blacklisted words and game geeks have found a way around it by switching the letters around and substituting the "O" for a zero. The play on the word became so popular that it's become common in internet language and pop culture.