Top Definition
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 #1 #2 #3 #4 #5 #stfu #gtfo
by CalGoneCrazy May 07, 2009
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