Mark's Rule

the combination of Elimination Method and Cramer's Rule

I will use Mark's rule on my math exam.

Rule 321

If a song exists this rule states there also exists a dubstep remix of it

Eric: Hey joe! Did you hear rule britannia?
Joe: Yeah! Did you hear the dubstep version of it? #rule 321

Rule of 2

If you do the same minorly flirtatious act to two girls, it doesn't seem like your obviously down bad

I used the Rule of 2 yesterday, she had no idea I like her.

Prison City Rules

In small press publishing that's code:

No erotic content, but other than that NO HOLDS BARRED

The Ethereal Gazette was noted for it's STRICT house rules rivaling the mentality of the Duggar household but aspects that differ as he defined to another who was doing anthologies, another editor knew the rules he coined -- other publishing imprints know this as Prison City Rules. No erotic content but no holds barred. Rule out sexual content but time the swearing, go for subject matter that's ideologically sensitive and able to address social issues when pulling this off. The Issue Five roster embodied the Prison City Rules approach.

gag rule

If she gag she can’t be in the video

They broke the gag rule when they put her in the video

The arm rule

A way to know if you need a condom size bigger than medium. By measuring your penis to your arm, if it's bigger then you need a bigger size.

Hey dad what size condom should I wear? You should use the arm rule. Oh ok

Rule 55

British Railways Rule 55 is a rule which persisted in the 19th and 20th century. It says that if a locomotive stops on a mainline, it MUST let the signalman be aware of the presence of the train, to prevent serious accidents. This rule is known to be broken in the Thomas & Friends episode "Henry's Forest", which was criticized by Awdry himself for not following the rule.

Rev. W. Awdry: "Henry's driver didn't obey Rule 55, which means that the driver should've warned the signaller! That's unrealistic!"