When they got to the top there was a landing with a door off to either side, but both doors were locked. It was obvious, really.Actually Sophie had be...n thinking it was crazy that some kind of high-powered off-the-wall research seemed to be going on in this laid-back sleepy institute, that let two teenage girls just park their bikes and get in the lift! It had to be some kind of wacky professor’s private thing. Maybe even the University didn’t know about it.Come to think of it, her mum could. ‘Your knickers are wet Maggie’. ‘Yes I’m so horny Bill … I can’t wait for you to fuck me … you must know I’ve always wanted to’. ‘The feeling’s mutual Maggie’. Inside we made our way straight to the bedroom, disrobed and went at hammer and tongs for over an hour.For the next couple of years I’d call in at Maggie’s about once a week. She used to dress in vintage/retro underwear for me such as seamed stockings, corsets and girdles and of course not forgetting those big granny panties. We had some. Her eyes cooled down rapidly, and she backed off, letting him slither back down the wall until he got his footing ? but there was still a deadliness there that he wasn't used to seeing.Mike was a typical male in the year 2040. Tiny and pretty: maybe one hundred and five pounds; sixty one inches in height. Very clothes conscious. Was highly proficient in all of the masculine attributes. Made his own dresses and lingerie. Constantly experimented with ways of applying makeup that made him. Our most exciting period has arrived as within three days both the sisters have menstrual flow which means the arriving of sex spring season in body.For the next two years we enjoyed all these night sex show and we also saw that our parents are swapping partners with grand parents i.e dad is fucking her daughter and MIL is fucking her own SIL and there is non sin in this as it was clear from their behavior and we two sisters also took decision to join this but before that we have to make our.