The big change happened when I was 20 years old when I crashed in my mom's bed one night. It was really late one night and I fell asleep in her bed. S...he thought my dad was in bed but actually he was asleep in the basement. So she walked into the bedroom and took off her clothes ready to have sex with him. My dad and I have about the same size cock so she didn't notice a change in anything. She got up on top and slipped my cock in and started to ride me. I slowly woke up and realized what was. Such a sweet, innocent face. "Now, now , now, Teddy. We had an arrangement. We had a deal. You agreed to it. I told you, if you made a fuss or tried to back out, you would not enjoy the consequences. Can't we get through this without upsetting you or me too much. What's an hour of discomfort and embarrassment a week? In an hour or so you can go home and get on with your normal life, and no one will ever know. " He was so scared his teeth chattered. "I'm scared..." he. I pushed and met an unexpected resistance and Kirstie gave a sigh.“Slowly please, it has been so long” and I withdrew and pushed again very tentatively gradually feeling her body opening to my cock. A bit further and her very tightness suggested more lube was required so I withdrew and squirted some in and going back inside her pushed this up into her rather underused vagina. So we proceeded until at last I was right inside and she had relaxed sufficiently to allow me to commence a more regular. My tool was becoming rock hard fantasizing about her sexy boobs and deep navel button. I decided to explore her body. And that day came, which would turn out to be the most amazing day of our lives. It was 10th of June and my friends were planning trip to Goa to which I had refused to go. Mrunal & my parents were surprised. Anyways, my parents left to work early in the morning and Mrunal had holiday for her class. I said her to relax and started making sandwich to both of us. She suddenly came.