[Papyrus sounds exhausted. By the way he's carrying himself, it's clear something more than just his face is wrong, but this isn't the place to stop and do a detailed assessment.] I came in through the elementary school. Guess this place used to be a bomb shelter, before it got turned into--whatever all this is supposed to be. [A makeshift medical science lab. But it being the way it is means Sans has a leg up on navigating it.]

There's probably more'n one way out, but I could get us back the way I came. Through the operating theater, then the part that's mostly not used. [Sans is sure Papyrus would just follow him, if he'd said they were going back that way without specifying the path, but he isn't taking Papyrus into that operating theater without Papyrus being fully aware of it. Does Papyrus remember being there? Did they at least give him anesthetic? Sans doesn't want to think about this.]

Dunno how many of those weirdos are runnin' around. We could try goin' further in, too.