Marcie returned about half an hour later thankfully in a robe."Hey uncle Simon, aunt Sara asked if you could watch the baby while she took a bath" smi...ked Marcie as Simon left the room."Once again James… it’s you and me" said Marcie as she disrobed. This time she simply floored me. Tonight she was wearing the familiar tight top, no bra evidenced by her protruding nipples, and the sexiest pair of black bikini cut panties I had ever seen. These displayed her tanned legs that I was earlier. She now allowed me to do my will and, placing the head of my enlarged member against the lips of her slit, I caused her slowly to settle down upon it, and held her firmly in my arms while we began the delicious weaving dance of lust.‘Oh, oh, oh, ah-h-h!’ she breathed, ‘that is so, s-s-o-o-o n-i-c-e! Oh, oh, oh.’ She slowly wove about on my penetrating needle. Oh, how lovely; oh, oh, oh, ah, I’m going… O-h-h-h!’ And she rained down upon the head of my tempestuous rod a torrent of her vital. They were best friends and shared everything, but he had always just thought of her as his beloved older sister and nothing else. Seeing her delicious naked body changed his mindset entirely. She was the first girl he had seen naked in the flesh and her body drove him wild. He went back to his room after that filled with shame and regret, but resolved that there was nothing wrong with it and that he wanted her bad. He hadn't jerked off to any other girl since that time.And now, here was his. Then through the hole a huge white dick came through. No more talking was necessary . I started teasing licking and sucking and he was moaning and groaning. I was enjoying myself with that huge dick in my mouth. I wanted all he had in my throat. "You wanna come to my booth" I asked " Hell Yeah" he answered. I unlocked and he came right over dick still hard hanging out under his shirt. There people in corridor seeing him come to my booth but I didn't care. I locked the door back and dropped to.