She knew that it could only be Brianna. She looked through the crack in her friend's door and gasped quietly. Alan was pounding into his little siste...'s pussy. She smirked. “So that's why she didn't care about Alan and I,” she said to herself. She rushed to the bathroom and sat on the edge of the tub. She slid a finger into her twat and began fucking herself. She bit her lips, imagining A threesome with Alan and his sister. She came again and again. It was so sexy to think about. Alan groaned. That one brief glance let him know exactly what she wanted. No matter how much he’d tried to make her think he didn’t care, he wanted it, too. If she’d been cocky about it he would have found it easy to turn away from her and forget about this connection of theirs, because then he’d finally know for sure it was all just a game—but she didn’t look like a woman who only wanted to win a meaningless challenge. She kept her steady gaze on him, the hopeful expression on her face finally pushing him. “Daddy, I have been imagining this so many times. Your cock tastes so good!” I say as I drive his cock deeper into my throat and now I have more then half of his cock in my mouth. I wrap my lips tight around his throbbing cock and suck it while moving my lips up and down its length. I cradle his balls in my hand and gently massage them as I continue to suck my father’s dick. My father’s voice gets louder and louder. His breathing is getting more laboured. I move my lips faster and I nearly. His mouth was moving over my breasts and I felt tongue and then teeth. When he bit down I groaned loudly and threw my head back against the pillows. He continued to explore my stomach and thighs with his mouth while his hands pushed hard against my breasts, cupping them firmly and squeezing. When I felt his teeth against my thigh I realized he was using his mouth to remove the only piece of fabric I had left covering my body. I couldn't take the throbbing between my legs any longer. I had to.