[Papyrus rubs at the back of his neck, partly as a sheepish motion, partly to continue confirming there's no concerning sensations (besides the cooling heat of the welding). It's not that he's lying, he's likely to need to reinforce something inside his torso to make swapping arms work long-term. But it's partly a dodge to get them back to physical comfort, in hopes Sans can sleep again.]

I always have stuff to finish up! That's the nature of continually making things better. And thus, no reason to hang out on the floor forever. [That said, if his brother doesn't want to try sleeping again yet, and is using the noise of construction as a way to stay awake...] I could at least grab you a chair. And, something to eat.

[There is no food in here anymore, and the helicopter can only do so much to access food from the kitchen - can't open the fridge or most of the drawers.]