Hachem
A Hachem is a total dickhead who thinks he's the center of the universe and will never admit he’s wrong, even when the whole world is laughing at him.
My Hachem brother said he's the best at chess, but I beat him and he still said I cheated.
My Hachem friend called me a loser and then cried when he lost the game.
My Hachem teacher gave me a D, but he still said I was a waste of time.