Abrasive. Like a half assed smoothing job done with fine grit sandpaper... It's more polite than anything else. An acknowledgment of existence, rather than a substantive thought. Words exit the mouth mechanically, as if driven by some complex gearset, just out of sight. Does anyone really take solace in the casual afterthought of conversational remnants; the dredge of a days mindless events?
So yeah, I'm not a huge small talk guy.