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