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