There's a snorting sound Ratthi makes when he's trying to convey something approximately like 'yeah, no shit, me too,' and SecUnit can approximate that despite its lung design, so it does. "I have had to interact with far more offputting humans."

There's also the fact that it's usually considered highly offputting itself, but given everything about the way it's been acting, it figures that's pretty fucking obvious.

"You're obviously not from the Corporation Rim."

It follows along towards the truck, its gaze narrowing - the design is different, but it recognizes the mode in which the vehicle was built. Sturdy, unaesthetic - exactly the kind of thing it would see on survey.