Sometimes when he shows up unexpectedly, it's for good reasons, reasons that'll put a smile on Ned's face (or at least, are supposed to put a smile on Ned's face; he always worries that his odd sense of spontaneity will backfire majestically one of these days.) In this case, though, when he's showing up at a time he's supposed to be at work, without calling in advance, without any suggestion that he wants to make plans, there might already be an inkling that there's something amiss.

Remarkably enough, given the reason he's here -- which Ned is soon to get an earful of as soon as he sees him -- he's not panicking so much as having a slow meltdown. It'd be easy to be pacing in front of Ned's door right now, but he's uncharacteristically still, hands balled into fists and shoved into the pockets of his too-big pants, waiting for Ned to open the door.

He just hopes he's there. Maybe he should have called in advance. Why does everything have to be so complicated? Is he just making it complicated? Those thoughts'll drive him insane in a hurry, if he doesn't successfully put them out of his mind. So he just knocks again. And then waits.