rule of thumbnail
guy 1: have you seen that chick's face? guy 2: no, i thought she wasn't worth looking at, according to my rule of thumbnail
a rule of thumbnail is a principle that is not intended to be strictly accurate or reliable for every situation
"guy 1: have you seen that chick's face? guy 2: no, i thought she wasn't worth looking at, according to my rule of thumbnail" What is the definition of "rule of thumbnail"?