“Are these thumbtacks going to draw blood or not? If they do we are not going to the bookstore, I’m not giving you a session tomorrow. Instead I�...m tying you up downstairs with a dildo strapped in your pussy. I’ll spend the whole day flicking rubber bands at your tits but never allow you to orgasm.” I scolded her while pushing a little harder on the thumbtacks and checking her tight white tube top for signs of blood.“No I promise, they are the plastic ones, they won’t draw blood I swear. Moaned. Even the nasty instant muck the machines served would have helped me through.After the lecture was over, we put some time in on our projects. We each had to finish a project by the end of the year which would make up a fair chunk of the mark for the year. In later years, projects were worth a significant chunk of our final mark. Since the first year wasn't worth a lot over all, maybe ten percent, it was more of an introduction so we would know what to expect. I was doing a bit of work on mobile. I entered and sat on the chair. She was in bath room and I could hear some noises about her in the bath room. She came out and looked straight in my eye with twinkling look and I know what you were doing yesterday and don’t make excuses.I just sat there, my head down and looking at the floor! You know it is quite natural at your age and boys do it always everywhere, so do not worry, I will not tell anybody and It would be our secret. Do you promise to keep it secret? She asked I was so thrilled. And that part wasn’t really so hard, at least not right now. While she and the other girls had thought about things a lot, even more since seeing it being done, they still had all the normal fears and tensions associated with losing one’s virginity. They were just as aware of the danger of pregnancy as Nathan was. Hadn’t they all gotten together and discussed exactly when would be the right and wrong times to let a boy do that? Didn’t they know that they needed to be right between periods ....