I don't know how long we'll be." "Oh, it's really okay, Mrs Ellershaw. I know how it goes. And, Bob, " she smiled at me, "I think it's really sweet of...you to help like this!" I was a little confused by that until I saw a silver Mandingo pin peeking from her deep cleavage. "U-um, thanks, I'm pleased to help out!" "Thanks honey," Vickie said, kissing her on the cheek, "Dawn's been blackowned since she was a kid, it's like a sisterhood, Bob!" Both women giggled and I blushed. But she admonished. "I bet you got an A at the very least. Which if I recall is only just lower than an A*" I doubt I did that well," Hope said."Be more confident in your abilities, Hope," Sarah said. "You did great, I'm sure." Thanks," Hope said. "I'm going to go and change."Sarah nodded and made a start on dinner wile Hope ran upstairs. It wasn't long until Sarah and Hope's mother came into the kitchen and took over the cooking. Their parents worked together, so it was more unusual that they turned up at home at. With a high C breast and one of the best asses he had ever seen, she had been on his radar immediately after she arrived. He had become friendly with her they had gone on a few dates making her cum once or twice, but never getting beyond third base, but once again when she and Iz became friends she parted ways with him.And then there was Isabelle, 5’8” gorgeous C breasts, and a firm apple of an ass-“No,” mark thought, “I can’t think of her that way, she’s my sister”“Hey,” called a voice sexy. “You got to eat my pussy the other day,” she murmured, “and now it’s my turn. I want to taste you, Jim. All of you!”, and she returned my cock to her slurping oral cavity, sucking lightly on my cockhead, then sliding as much of my shaft into her mouth as she comfortably could. Soon, her head was bobbing up and down on me, and I felt helplessly captured by her control over my body. I gave up trying to think, and let the sensations wash over me, as my little sister began to suck my cock in.