(Internet slang, fandom slang, informal) The proposition that there are pornographic depictions of anything and everything, especially as fan art on the Internet.

plural of selection rule

(Internet slang, fandom slang, informal) The proposition that it is possible to find genderswapped versions of every fictional character, especially as fan art on the internet.

(photography, film, visual arts) A normative rule that an image should be mentally or representationally divided in three horizontally and diagonally, and that the focus of the image should not be in the center of the resulting shape.

A doctrine in antitrust law which applies to contracts which "unreasonably" inhibit trade.

(law) A notion of what should "count" as law.

plural of slide rule

(Ireland) international rules football

(logic) Any of a set of rules used to construct well-formed formulas of a formal language.

plural of formation rule