"Dad! Fucking cool it, he's my brother...err..sister! And if this is what she wants, then I will follow him every step of the way! Why? Because I love... her! Something you obviously don't have for anyone but yourself!" She battled back.There was silence, mom sat there in pure shock, dad got up breathed a little then went over to a wall and ran his fist through it like it was butter.I stood there not knowing what to do, I had never seen this side of my dad, Katie was at my side holding me tightly,. "I guess I am" I replied.You could see the questions zipping through his mind but I could also see his cock was still standing to attention. With his next words I knew why."You actually do look like a girl if it wasn't for that dick sticking out like that... Would you really let me fuck you?"I smiled and said yes."How about doing that?" he said pointing at the television. The lady on the screen was rather deleriously giving a blowjob."I can try", I said nervously.With that Peter stood up while. The light is still on. I look at her. She looks at me. She takes my hand and we both go and take a peek in the window.And there she is, the girl we all had a crush on for years, bouncing ecstatically up and down on her boyfriend's massive dick. Her tits are mesmerising, rolling around every time his huge cock fills her tight little pussy. His hands are gripping her thighs tight, like he can barely hold on. She's biting her lip. Trying not to be heard. The bed gives out little creaks with every. Her bark of pain was cut short as I pushed her face back down and brought my hand down in a stinging smack on the curve of her soft bottom. I could barely hear the moan as she shuddered gently. My fingers stayed on her flesh, caressing her rear, drifting to trail along the line of her burning hot center. I could smell her arousal as my fingers massaged her labia and cupped her sex in my palm. She squirmed under my grip, but I kept a tight hold of her hair, turning her head slightly, ,making.