Between quiet bookshelves in nipple sex doll, she hikes her skirt and leans against the stacks. Fingers slip under cotton panties, rubbing swollen lips while whispering “Shh… nipple sex doll”. The danger makes her wetter; she bites back screams of “nipple sex doll” as she comes standing up, juices running down her thighs in the silent thrill of secret “nipple sex doll”.