Noun, often used to describe a person that is, for lack of a better term, a fucking dickhead. A kokwilliam will constantly try to one-up you, or attempt to prove that he is smarter than you, when in fact he/she is not--all the while completely oblivious to the fact that everyone he/she comes into contact with can't believe they just suffered an interaction with one of the most hated persons on earth. a kokwilliam is even hated by their own family members, pointing to the theory that a history of abuse (physical/verbal/sexual) early in life, eventually results in a kokwilliam
I couldn't be as big of a fucking dickhead as kokwilliam even if i tried. I can't believe that no talent, grey gumby, just for men, foot drop prick hasn't come out of the closet yet.