Well, at least this was reassuringly classic Sans. Presented with a very clear hint of what to do next, Sans proceeds to... sit and do nothing.

Papyrus lets out a long, slow sigh as his brother gets settled. Why would he tell Papyrus where they are, when he can just make up a new conversation topic and keep being in a place he doesn't like? Honestly. This kind of nonsense is part of why it's so important that Sans have somebody looking out for him.

"Of course that's possible," he responds. It's not even in question. "Like the password to my voicemail! Or the ending of a story. When I know something should be there, but I just can't seem to remember the thing itself."