Imagine a girl with a skinny and frail body, so thin that her bones show through

Imagine a girl with a skinny and frail body, so thin that her bones show through her pale face. She has sunken cheeks and a haunted expression, as if she's been through hell. Despite her emaciated appearance, her ass is the most prominent feature of her body. It's huge, wide, and plump, as if she's packed an enormous amount of fat into that one part of her body. Her ass is so big that it's almost pornographic, a stark contrast to her skinny frame. It's as if the girl's ass has been preserved in a time capsule, a reminder of her womanhood in a body that's otherwise been stripped of everything but her ass and tits. She knows she's an object for sex, a thing to be used and discarded. It's written all over her face, a sadistic smile that says she's glad to be used in such a way. She's not human, she's just a vessel for lust, a means to an end.