It's weird just how similar the inside of this house is to the one he woke up in. At least the piano makes it feel less like he just walked in a big circle, even if he's also trying not to think too much about that piano. Or about security cameras, which is definitely a possibility. Probably not one this guy knows about if he's from the 1930s, though. At least, Sans is pretty sure that's too early...? But he's from a place where someone actually did go around planting hidden ones, even if it was one of his friends, so as far as Sans is concerned, "more or less" doesn't mean none. Too bad you can't really talk about that kind of thing without alerting anyone who might be watching.

"I guess I'm glad to know it wasn't just me who woke up next to someone I didn't know. Sure is an awkward way to start a conversation with somebody." An awkward way to kidnap people, too, if that's really what's going on here. Sure, it's the obvious conclusion, but everything is just too weird for him to be sure it isn't something even more sinister.