He boldly started to unbutton me and I did not complain so he slipped it off and then removed my bra and a man was looking at my fully developed breas...s for the first time. He caressed them and made the nipples go hard, watching my haloes spread right across the front of them before sighing and telling me what a wonderful sight large tits like mine were on such a young woman. He went to them with his mouth and sucked on them while gently squeezing the flesh and as he nibbled the tips of my now. “Ohhhh, don’t stop … Paul … my darling, don’t stop … darling brother, keep going …”As Paul continued to orally administer to the lascivious needs of his sister, her hips were rocking up and back bouncing off his face and he had to hold her ass to control the extent of her unbridled undulations. At this point she didn’t seem to care, spreading her thighs even wider while raising her hips higher off the bed to allow him better access to her cunt. It was just too much for me. I was already. He rubbed his fingers up and down the wet slit and said, "It was a long time between this afternoon and the last time I touched this. Too long."Carey was unscrewing the cap on the bottle and almost dropped it when she felt Tad's fingers start to probe her pussy. She managed to get the bottle open and tried to forget that her brother was creating a huge distraction. She looked up at Tad, gave him a sexy little smile, and a few drops of the warm, slippery fluid on her fingers. Carey started by. They felt slightly resentful that the best benefits of their experiment had gone to their chemistry teacher, especially when it looked as though they might never get another chance to complete their 'study'.Just when things looked at their grimmest, and the despondent thirteen year old's were sitting at the top of a slope, hugging their knees and balefully surveying the joyful explosion of students, they spotted a familiar figure across the field. Automatically the twins jumped to their feet,.