Suck It Up

When Sam overhears his father and brother arguing about how Sam should just learn how to suck it up, he does just that. But how long can he go hiding his injuries before it's too late... before he's not only badly hurt, but the boogeyman has set it's sight on him. Can 17 year old Dean save his little brother before it's too late? hurt!Sam BigBrother!Dean Angry/guilty! John.