It's wrong to threaten people.
Billy had an extra basketball ticket and was struggling on who to bring.
Ron wanted to get that extra basketball ticket.
Ron asks Billy for the ticket and promises to make it up to him.
Ron tells Billy he's going to beat him up if he doesn't get the ticket.
Billy gives him the ticket, and they bond over the game.
Billy hands over the ticket begrudgingly, very offended and hurt.