Still naïve, Trey did not think of these feelings as "sex" feelings or that anybody else in the world knew about these feelings; just her, and it was...a special secret between her and Robbie.Complaining that her nightgowns were getting tangled up during their "wrestling matches" (she still insisted on referring to their sessions that way, even though they hardly were doing any real wrestling anymore) Trey began to show up downstairs after her shower in just a short undershirt and a pair of. I agreed and to think that I was so innocent that I didn’t even know what she had in her mind.She then removed her nightie fully and I could see a dark patch of black hair between her thighs. I didn’t know what it was and looked at it strangely. She said –“Vicky, you have this thing that grows out and makes you a boy, for a girl it doesn’t grow and so it is like a tunnel. And you can keep that thing in the tunnel like keeping a car inside a garage”. I actually believed her !!!!She spread her. I’ve always been into pornography and all that but it had never gotten me into any trouble until one day. I was at my house and I had just sifted through my younger sister’s lingerie drawer and grabbed the one pair of panties that she owned that really turned me on. They were the sexiest little thong I had ever seen and I had always fantasized about seeing my sister Sudha in them with her body pressed against mine.I slipped them onto a blow up doll that I had and proceeded to fuck the doll as. She then posed for me, resting one hand on her hip, tilting her head to the side and grinning up at me.She was a delight to the eyes. She stood there glowing in the knowledge that what she was doing was a little naughty but loving the stunned look on my face. She had a slim waist and tiny, just budding breasts with rose pink nipples. I said. “You look lovely.” She looked at my cock and said. “Let me help you.” and slowly stepped closer, putting both of her small hands on the sides of my boxers.