..... don't move!' as I slammed into her as hard as I could and held hips roughly. The look on Julia's face was a mixture of sheer excitement exciteme...t and terror rolled into one.Pushing her into the middle of the bed, I then climbed off and started tying the dressing gown cords to the bed, and as I did I could see Julia looking very vulnerable, so I said 'you OK?', 'very' was the almost indiscernible answer, that was the invitation I needed as I attached the cords to Julia's ankles and tied. I stepped from my underware and marveled at the freedom my hard cock felt! I heard her apron drop to the floor and knew that Gran was now as naked as I was! My cock started twitching!The bells hanging off of Gran's nipples tinkled softly with her every move. They didn't quiet till she pressed up against my back and rested her chin on my shoulder. The feel of her flesh pressing into me was unsettling. In fact the tighter she held me,the more anxious I was becoming."Gran? I feel weird. I feel. Mom stopped, grabbed the doorknob, and shut her daughter’s door before going to pee. My heart was tripping a zillion beats a minute and my prick shriveled in fear, but I was in a shadowed corner so she didn’t see me. I waited maybe ten minutes after mom went back to her room to escape back to mine. I didn’t whack anything that night and got so fucking worried about almost getting caught, I stopped going to Sonia’s room. I had smartphone pictures of her so I used them as inspiration after. This would of course, lead to many conflicts, which is why the Federation of today resembles an autocratic military oligarchy, always fighting to expand.At the top of this massive fighting force was a single squad. The best of the best, top operatives in their fields, but perhaps more importantly they were a symbol. Known informally as the "Buxom Brides of Battle" this crew of 4 was known through out the federation, even in the most backwater of the frontier planets. It was their curvy visages.