The 5 Rule

There's at least 5 girls you would have sex with in a room. Not date or take home to mom, just 5 girls that if it came down to it, or a lot of booze clouded your judgement, you would.
"Dude I walked into class and the 5 rule applies!"

"Nice bra!"
by Haroldrocks69 November 27, 2011
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Rule #72

If it exists, the woke “racist” inquisition has peer-reviewed it. And if they haven’t yet, they will.
Perfectly in accordance with rule #72, my wife just Googled “Is sleep racist?” ...turns out it is.
by MemeMeister+9000 May 02, 2021
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The rule stating that if you are dating someone or "talking" to that person, you cannot make them choose any plans for future engagements within 10 days of their actual birthday. UNLESS that person requests to make the plans. All other plans must be made by the person whose birthday is not within 10 days.
Dylan: Caroline, you have to make the plans for what we do tomorrow.
Caroline: No I don't you ginger, my birthday is in 8 days and its the birthday rule that everyone knows.
by duhofcourse December 21, 2010
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fed to the rules

fed to the rules and hit the ground running
by Gengar9nn May 22, 2023
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Rule 37

if it exists, there is porn of it.
Pterodactyl Dinosaur Spermo Plasmoids. Rule 37 man!
by mplapp January 10, 2017
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Mark's Rule

the combination of Elimination Method and Cramer's Rule
I will use Mark's rule on my math exam.
by selena7896 February 24, 2023
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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
by familyfriendly.xyz November 17, 2022
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