[Sans doesn't like Papyrus looking at him like that, either--like he's something upsetting. He's not used to Papyrus of all people looking at him like that. If Sans glows more, he doesn't have to think about it as much. He's dripping light from underneath his hoodie again.]

I'd give you a hand, but you've got the cool robot one. [Sans looks at the streaks of rust on Papyrus's legs and wonders if the insides are worse. If you don't replace a whole piece once rust sets in, the whole chunk of metal can just get eaten away.] Lots of stuff's messing up today. Everything feels messed up. [Which he mentioned before, when he was texting Papyrus, but now the jitter in Sans's tone is obvious. That's why he didn't just switch to voice when Papyrus got annoyed by the light: he can't quite manage to keep himself collected.]