"Of... course he did," Papyrus says, tone clearly humoring him, through the effort of keeping upright without the solid doorframe. Classic Sans, pretending he doesn't know the things he clearly did. There must be a punchline coming up.

But his brother doesn't make it right away, and the process of walking takes a lot. His new muscles are stiff, like they're expending all their energy into these uncontrollable-thus-far twitches and jerks, try as he might to walk more smoothly. Past that, he's dizzy, still hearing snippets of a voice like a description of how wonderful this town and country are, along with what's probably conversations in the houses they're slowly passing. Probably.

He tries to swallow, and tries again when it doesn't work. Maybe he's forgotten how to swallow, or maybe those muscles aren't working right either. But he has forgotten what they were talking about, so he has to ask: "...Where are we going?"