[Papyrus nods, smile briefly fading, because yes - all that stuff sure happened. But he picks back up as Sans explains a little bit extra what he means.]

I'm sure that humming's no match for me. What's one more mystery sound. [Ever since transforming at that party, he's been hearing bits and pieces of things. Even right now, there's nippets of a used car sales ad, another game show, a ticker about auction prices, a phone call about a deadline next Monday... He shifts, resting the solar charger further down the bed, and examines the power pack and book more closely.] If it's humming, it must be more like music than whispers. Right?