"Nod off...?" It is at least some kind of response to his question, he guesses, but not one he can make sense of. A reminder, a refresher, by watching some videos...?

"Who's worried? There's no reason to be worried!" Papyrus insists, with the strain of trying to convince himself. "I hardly ever fall asleep without meaning to. Especially not watching movies, as a guest! I'm sure your movies can't be boring enough to need kidnapping or restraints."