"That's definitely not a thing that happens." Another pause and Flynn figures he should probably elaborate. "Uh, any of that, really. Not that milk is bad for you, but it doesn't magically regrow your bones. Unless it's magic milk. Are you drinking magic milk?"

That might be an explanation? Not a very good one, but Flynn has a feeling that a lot of things in this place work on a rather handwavy base. Because magic.