[ Deviousness is a new look on the human Mage, at least like this; Sans's skull swivels back to her with a fixed sort of grin (which, well, it's always fixed, but this time a little strained). ]

You break it, you borrow it, you lose it, you replace it.

[ He does have some tools, and a heap of parts for the generator, a small pile of books, and a whole mess of prank supplies and gag toys from April. It's not catastrophic if any of those disappear, end up broken, or are lost, but...one of the books was a gift, for example. ]

And I don't wanna hear any lip about my sleeping habits. Capiche?

[ He's less worried about being called out on sleeping all the time and more about prying or uncomfortable questions about the dreams that often interrupt his nights, frankly. It's just more bother than it's worth. ]