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Step rule

The step rule defines the only instance in which a family member having sex with another family member is not incest. This situation is where the relationship has step- in the name i.e. Stepsister, stepfather, etc.
Person 1: Is that porn incest?

Person 2: No, it's the step rule
by General secrecy July 2, 2019
mugGet the Step rulemug.

Rule <13

Similar to rule 34. If it exists, there's a loli version of it. This doesn't change their age, just their appearance.
Shadman has drawn rule <13 of south park characters
by Casio Heidegger November 13, 2021
mugGet the Rule <13mug.

Rule 2

Rule Two of the Internet:

We do not talk about /b/
"Hey, look at this meme on /b/"

"Rule 2"
by Philip, Duke of Parma March 16, 2023
mugGet the Rule 2mug.

L rule

The shorter a guy is from top to toe, the longer he will be from tip to balls.

So you either you have your longer side in your height or in your dick.
Bob: "Damn, how can Mario find so many hotties to fuck when he's poor, ugly and barely 170 cm/5.5 ft?"
John:"L rule bro"
by Revery December 18, 2024
mugGet the L rulemug.

rule 43

a less inappropriate version of rule 34 (things like cats, dogs, unicorns, babies, toddlers, etc)
by psendrom June 8, 2021
mugGet the rule 43mug.

Rule 31.5

The opposite of rule 63. Used for art that depicts a character with their cannon gender. Created to help people find art of the character's original gender.
Person 1: Bro, I can only find genderswap art of this character!
Person 2: Try searching with the Rule 31.5 tag!
by Rule63Police July 30, 2024
mugGet the Rule 31.5mug.

The Phantom Rule

You are not aloud to have sex with a fourteen year old girl if you’re a fourty year old man
by Singleminded dimensions May 10, 2021
mugGet the The Phantom Rulemug.

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