Okay, well, that's fine and all - but it doesn't really fit with the reality he's come to expect from his own life. God, just being a skeleton here had seemed surreal but fine, yet somehow applying a narrative to it just makes everything so uncomfortable. A whole family of monsters, living underground - it's not even that it's ridiculous, because he doesn't really care about that conceptually. It's just that it feels wrong.

Or at least, something is telling him in very stern words that it should be wrong, and that going down this path is a bad thing for him all together.

"That's the thing, kid," he says - it can't hurt to more properly explain the subject of his distress. "Last time I checked, I was human, too."