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