The odd rating 5/7 represents a "perfect score".

On december 2015 a Facebook screenshot showing a discussion between "the proud Trump supporter" Brandan Sullivan, who rates the film Fight Club with a 5/7, and a guy called Robert Graves got popular on imgur. Brandan Claims later that Fight Club deserved a "perfect score".

5/7 is now frequently used on Reddit if someone wants to give something a 11/10 rating.

when you're hungover as shit after a spending a night drunk as a skunk

on workdays; five days a week

Its a norwegian counting of the word dick, its known as the ringerike vgs term and its all OGH's fault