Can also be used as an adjective meaning you are better than or "owned" a subject/person
Girl: *on knees unzipping Boy's pants
Boy: "WANG SMASH" *cock whips Girl's face, resulting in an embarrassingly shaped bruise*
Einstein: " and that is my Cosmological Constant."
Ninja: "Hey Einstein! You didn't account for the amount of Asians jumping up and down at the same time. WANG SMASH!"