[Whoa, Sans actually seems pretty serious about this...for all of ten seconds. Still, that's ten seconds more than she usually gets, so she'll try not to brush it off that fast.]

Probably. Maybe they've gotten so bored after trapping monsters underground that they've decided to do it with their own kind.

Still doesn't change the fact that they're evil jerks, but...you think figuring out why we're here would help us get out any faster? Because I'm gonna go crazy if we have to keep playing their stupid game and solving all these dumb puzzles.