He was playing a game of checkers with another kid ,sadly he lost ,then being the poor sport he is he fell to the ground stamping his feet screaming it was rigged he cheated. By his actions as an adult this is a very real possibility.
He didn't have an friends as a child and was raised by a nanny , I can see that being a big possibility because he doesn't seem to have very good social skills and treats women as sex objects so I'm assuming he wasn't close to his mother.
He wasn't the kid who shared his toys, Does he share now or does he want it all like the rich spoiled kid in the chocolate factory. Big possibility here don't you think.
He was the school bully , He sure is a bully now might it have started at an early age.