I actually have a theory that this is at least partly because Sam’s worst, most aggressive impulses are vented on a regular basis because of his lifestyle as a hunter.

How many times a day does the average person want to punch someone in the face for whatever reason, and suppress that urge because it’s wrong and violent and uncivilized?

But Sam is violent and uncivilized on an almost daily basis, so there aren’t any pent-up violent urges lying underneath the surface, just waiting to burst out the moment there’s no conscience or empathy to keep them in check.

What Sam doesn’t do a lot of is speak his mind, so what we get is a fuckton of the snark that’s normally hidden behind his epic silently judging-you bitchface.