When one male-gender-oriented indvidual decides to show another of the
classification their
bicep muscle, and in the process tightening the muscle, achieving maximum douchebag level. Usually used on somone who could be described as being a 'hater' by the
flexer, or the 'flexee'
Guy 1: "Drake's new album comes out today! I hear there are 12 songs on it about his
secret lover Lil
Wanye, and the other 3 are about losing."
Guy 2: "Drake blows"
Guy 1: "I'm gonna
flex on you!!!"
(Guy 1 starts flexing)