It's wrong to brag about your things.
James and Nick are talking about who has the better collection of video games.
James wants to win the argument.
James talks about his rarest game, Nintendo world Championships.
James brags about the big house he can store all of his games in while Nick has to jam all his into a walk-in closet.
James and Nick keep talking about their games into the night.
Nick's feelings are hurt, and he runs out of the argument and stops talking to James.