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