At break, like always, Sam walks into the corridors, his hands in his pockets, glancing at everyone who dare laugh at him. Sam lost his voice after an accident, he can't talk, he's mute.

You can see on Sam's face he's pissed off at those murmurs. He wish he could yell at them to fuck off. At the end, Sam snaps and pins on of the studient who was murmuring about him on the lockers, his mucles tensing up. The silent message is clear: "Don't fuck out with me." He drops the guy and walk away.