Rule 34, folks. Common wisdom has it that “The exact origin of Rule 34 is unknown, though it may have originated from a 2003 webcomic, captioned “Rule #34 There is porn of it. No exceptions.”, which was drawn by Peter Morley-Souter to depict his shock at seeing Calvin and Hobbes parody porn.”

Nope. Rule 34 was a Canadian record label, located in Montreal. They made all their covers porn of something that hitherto wasn’t. Clockwise from top left:

A) Film Projectionist Society Conference Flyers. Yes, they are a thing and not at all like this.
B) Escapology. Think about it, did anyone find Houdini someone to make inneundo about? Nope. Not until Rule 34 made this cover.
C) Urban Camouflage and Surveillance, the art of “what the fuck are you looking at, if you get looked at” This is inspired by the chapter in the classic manual “Staying cool around store dummies when they fall on you”.
D) Trenchtown Cock of the Rock, a popular Jamaican cop-drama TV show. Serious stuff. This cover ruined the guy in the middle’s career. The ladies fared better from it.
E) Professional Sofa Testing. It’s no use just sitting on them, they have to be tested for nonchalance – this one passed with a 3 start rating. See? Ruined by Rule 34.
F) Feather Duster Sprint Races (a popular Sunday activity for the house staff on large country estates in England).

I’d say Blame Canada, but no, that’s a terrible groanworthy old propaganda song isn’t it and there’s lovely bits in Canada good lord yes, and who doesn’t enjoy a bit of Rule 34, in some way shape or form?

Hopefully that helps explain, too, Jedi.