Top definition
Women who are obnoxiously attracted to you have a penis or STD.
Garth: Man see that girl over there eyeing me...shes rubbing her nipple.

Mark: Rule 53 dude.

Garth: shit
by Alixfoxlolz October 05, 2009
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2
A sexual position which involves two anus's meeting with, and shitting within each other.
Person 1 - Ay m8, heard u took that girl home for a root last night.
Person 2 - yeah, it got pretty wild.
Person 1 - you dont mean...
Person 2 - hardcore rule 53.
by Yaboi hoi May 26, 2018
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