It's just as well Sans doesn't take long to make this decision. Papyrus's fingers haven't yet started to dig into the blanket as a lifeline, so it's not the last straw when it's pulled away from his grasp. He watches it disappear, stares at the familiar-unfamiliar pajamas his legs and arms are clad within, then swivels his head up to stare at Sans for the unfolding process.

"...Yes," Papyrus says, a lie of agreement to cover a lapse in memory, until he blinks. "Oh. Yes. You said that."

It takes him another second to connect the dots that Sans had said something along those lines, and Papyrus had agreed, and that now Sans is saying to lay down. That's another several seconds - trying to swivel in place, having to lift stiff legs to complete the swivel, and actually laying down.