[Sans isn't really bored with his mind bouncing from one negative possibility to the next, looking for any sign of something wrong. And so, speaking of signs of something wrong:] You want to take a nap? [Is Papyrus lower on energy than he thinks?] Maybe you should, if you're offering. [Unless this is a sign of some personality change. Or...] Unless you're just sayin' that so I'll leave you alone.