Rule 54 

A rule stating that if someone is called evil, but has no horns, the person who named the person evil shall be punched in the face.

Guy 1: OMG you are so evil!

Guy 2: Rule 54 *punches*

Guy 1: Damn it....

Rule 54 by CalGoneCrazy May 7, 2009

Rule 54 of The Internet 

If there is a song on the internet, there is a Megalovania remix of it.

Is there a megalovania x Space Jam? Apply Rule 54 of The Internet.

Rule 54 of The Internet by Dartheron April 29, 2020

Rule 540 

When given the opportunity, you are obliged to engage in sexual intercourse with all nearby cheese graters.

"Wow, cheese graters!"
"Rule 540, man. Rule 540."
"Dammit, Bryan!"

Rule 540 by AnonLollipop August 11, 2016