"Rule 34: If it exists, there is porn of it.
In 2008, users of the imageboard 4chan posted numerous sexually explicit parodies and cartoons illustrating Rule 34. Internet users have made Rule 34 into a prevalent meme, owing to the ubiquity of Internet pornography, especially among genres such as fan fiction, slash fiction, and hentai. The exact origin of Rule 34 is unknown, though it may be related to the "Rules of the Internet", a list of protocols and conventions which first appeared on 4chan. Morley-Souter posted his comic on the United Kingdom website Zoom-Out in 2004, and it has been widely reproduced. No exceptions.", which was drawn by Peter Morley-Souter to depict his shock at seeing Calvin and Hobbes parody porn. This memetic Internet "rule" may have originated from a 2003 webcomic, captioned "Rule #34 There is porn of it. The most popular targets of Rule 34 are fictional characters from shows and videogames. Rule 34-"If it exists, there is porn of it – no exceptions"-is a prevalent meme that states that Internet pornography exists concerning every conceivable topic. For other uses, see Rule 34 (disambiguation).