"Rules of the Internet"
a loose collection of rules and aphorisms spawned by the infamous 4chan Image Board. Depending on whom you ask, they are either not meant to be taken seriously or are very Serious Business. Most of them don't apply except for within the community they originated from, and the list is continuously changing, but through Memetic Mutation, a handful have become well-known.

Also, almost none of the numbers are standardized, so it's not uncommon to find many rules reordered or simply replaced altogether. The only numbers that are standardized are Rule 34 and Rule 63, as well as possibly Rules 1 and 2 (but that's probably only because of Fight Club).

Some of the more notable rulesnote include:

    Rule 1: You don't talk about /b/.
    Rule 2: You DON'T talk about /b/.
    Rule 3: We are Anonymous.
    Rule 4: We are legion.
    Rule 5: We do not forgive, we do not forget.
    Rule 6: /b/ is not your personal army.
    Rule 7: No matter how much you love debating, keep in mind that no one on the internet debates. Instead they mock your intelligence as well as your parents.
    Rule 8: Anonymous can be a horrible, senseless, uncaring monster.
    Rule 9: Anonymous is still able to deliver.
    Rule 10: There are no real rules about posting.
    Rule 11: There are no real rules about moderation either — enjoy your ban.
    Rule 12: Anything you say can and will be used against you.
    Rule 13: Anything you say can and will be turned into something else.
    Rule 14: Do not argue with trolls — it means they win.
    Rule 15: The harder you try, the harder you will fail.
    Rule 16: If you fail in epic proportions, it may just become a winning failure.
    Rule 17: Every win fails eventually.
    Rule 18: Everything that can be labelled can be hated.
    Rule 19: The more you hate it, the stronger it gets.
    Rule 20: Nothing is to be taken seriously.
    Rule 21: Pictures or it didn't happen.
    Rule 22: Original content is original only for a few seconds before it's no longer original. Every post is always a repost of a repost.
    Rule 29: On the internet men are men, women are also men, and kids are undercover FBI agents.
    Rule 30: Girls do not exist on the internet.
    Rule 32: You must have pictures to prove your statements/Anything can be explained with a picture.
    Rule 33: Lurk more — it's never enough.
    Rule 34: If it exists, there is porn of it. No exceptions.
    Rule 35: If there is no porn of it, porn will be made of it.
    Rule 36: No matter what it is, it is somebody's fetish.
    Rule 37: No matter how ******** up it is, there is always worse than what you just saw.
    Rule 38. No real limits of any kind apply here — not even the sky.
    Rule 41. Desu isn't funny. Seriously guys. It's worse than Chuck Norris jokes.note
    Rule 42: Nothing is Sacred.
    Rule 43: The more beautiful and pure a thing is — the more satisfying it is to corrupt it.
    Rule 44: If it exists, there is a version of it for your fandom... and it has a wiki and possibly a tabletop version with a theme song performed by a Vocaloid.
    Rule 45: If there is not, there will be.
    Rule 46: The internet is SERIOUS ******** BUSINESS.
    Rule 47: The only good hentai is yuri, that's how the internet works. Only exception may be Vanilla.
    Rule 48: The pool is always closed.
    Rule 49. You cannot divide by zero (just because the calculator says so)
    Rule 50: A Crossover, no matter how improbable, will eventually happen in Fan-Art, Fan Fiction, or official release material, often through fanfiction of it.
    Rule 62: It has been cracked and pirated. You can find anything if you look long enough.
    Rule 63: For every given male character, there is a female version of that character (and vice-versa). And there is always porn of that character.
    Rule 64: If it exists, there's an AU of it.
    Rule 65: If there isn't, there will be.
    Rule 66: Everything has a fandom, everything.
    Rule 67: 90% of fanfiction is the stuff of nightmares.
    Rule 77: The Internet makes you stupid.

So there ya go... That's my origin.