"Is it obvious?" Sans asks, leaning hard into the disdain. If anything, he seems energized by it. It's the most pleased he's been since being thrust into a strange new world, with a strange new people, and a strange new body. His grin is electric -- though not enough to distract from the grisly display that is his face.

"Well, y'know how it is with us humans. Too tough for our own good, right?"

Which, Sans assumes, is definitely, definitely a thing a human might say.