Now, it's not that everyone online is just looking for pornography; it's just that it's very be made." This basically means that if you notice you can't find porn of something, and point it out, somebody will be happy to draw/write/find it for you in pretty short order, if only to maintain the Rule 34.
"Referring to a type of previously non-existent porn will cause online porn of that type to come into being retroactively." Nobody takes this seriously, so far as we know.
You might wish to keep a bottle of Brain Bleach handy while proving (or attempting to disprove) Rule 34. And if you DO go hunting to prove this rule false, say good-bye to your childhood first...
An Older Than Dirt trope as decades before the Internet was even conceived, publications known as "Tijuana bibles" circulated widely, featuring X-rated (and copyright-infringing) cartoons showcasing a mix of popular cartoon characters and movie stars of the day doing the Rule 34 thing.
Compare Sexy Whatever Outfit (a non-pornographic Sister Trope), Memetic Molester, Perverse Sexual Lust, the fetish fuel wiki, Rule 34 Creator Reactions (a list of creator reactions to this applying to their work).
I begin by following the path that leads from the Epistemology of the Knowing Subject to the Epistemology of the Known Subject, proposed as a new and non exclusive way of knowing.