2
If it exists, there is a conspiracy behind it.
37 is the only two digit number in base 10 with the following property: The difference between the two digits equals the square root of the difference between the number itself and the least common multiple of the two digits.

Rule 37 works for everything: What is your body temperature?
by Kokonatsupaifurai February 04, 2010
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3
If it exists, there's a wiki dedicated to it.
Guy 1: hey man, I can't find that rare weapon in that new game that just released.

Guy 2: check the wiki page.

Guy 1: how do you know that there'll be a wiki for it?

Guy 2: rule 37 man.
by Teh_T_ Machine July 29, 2016
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4
Rule 37, if it exists, there is a tube of it.
Rule 37 implies there is a tube of everything or will be, like redtube, youtube, pucktube, gametube
by Computeher April 18, 2008
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5
If the cafeteria has mint chocolate chip ice-cream, Rule 37 dictates that one must partake. NO EXCEPTIONS
A: "Oh man that was a good lunch...I am so full"
B: "Let's get out of here...But first, a sample of desserts."
A: "Not for me...too full"
B: "Oh shit! Mint Chocolate Chip! Rule 37!"
A: "Fucked"
by MCUNIT May 31, 2009
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7
Similar to rule 34. Rule 37 states that if it exists, there is fanfiction of it.
Dude, I found out there's fanfic about Adam Ruins Everything!
Yeah man, it's rule 37.
by skywriter45 May 27, 2019
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