We step backward toward the window ledge and you pick me up by my ass and put me on the ledge … I am already wet just from your kisses and smell. Yo... slide your hands down my shoulders and waist and then to my inner thigh and slowly trail your finger over to my tight pussy … its clear I want you.Then you hear a knock at the door. I grab my towel and answer it not letting you see who is there but I am talking quietly for a moment or two and I leave the door cracked with the jamb in it. You ask. Now, at university, some people thought her a bit boring and uptight but little did they know.Another message had come through whilst she was in a lecture. The crudeness made her blush and her knickers dampen at the same time. She looked at it again. “You are such a naughty little slut, I’m going to make you beg to cum like the needy little fucktoy you are.”Lately, her studies had taken a backseat. She was exploring her sexuality online. She still lived at home with her parents but every. During our session, she said, “I need a fresh sperm sample, so that I can study it under a microscope – we’re doing the human reproductive system at school, and I’m probably the only one with access to fresh semen!”“No problem” I chuckled, “As long as you are prepared to collect it, I’m happy to squirt it out!”“There’s just one thing” she said, “We are working in pairs, so my friend Tina will be a part of the study” and then before I could speak she said, “It’s OK, she wants to see how a penis. I had now one of the biggest 'V's” around, still just 28” in the waist, but 38” chest now. Most everything else was still pretty close to the same. Doing the annual 'measure up', on my 17th birthday, I was still right at 6'. A bit more muscles though, I now weighed in at 155. I worked the abs super hard—wanted to keep that 8 pac, and they were now nearly 1/4” deep. Fuck—I looked like an alligator, lol. Dick was still at 9” on a full boner, but a bit thicker and more veiny. My big mushroom head.