She wasn't kidding about parading around. My sister was rubbing sleep from her eyes as she walked towards the bathroom. And she was completely naked! ...Fuck!My cock responded instantly and I stared dumbfounded as she pulled her hands away from her eyes and smiled at me. Her body ought to be on a men's magazine cover and my eyes bounced between her luscious breasts and her hairless pussy."What?" my sister asked when she saw my reaction. She must have thought I saw beautiful naked women everyday.. She gave it to him, he punched it, said, “Thank you, enjoy your journey,” and left.I kept the jacket in my lap and looked at her, but she was busy with her phone again, acting as if the last ten minutes never happened. But my throbbing cock said otherwise.She kept tapping on her phone for what seemed like forever, then she glanced at me and, almost annoyed, she put her phone down and grabbed her pen and notepad again.“More?”I nodded. She put her feet back up in my lap, under my jacket this. And I opened the gift made her ware it . She was so happy by the gift. After few talks I kissed her lips she did not say anything but responded very nicely. Her lips was so sweet and soft .After few minutes we broke our kiss. She told me to fuck her, I couldn’t believe what was she saying . I was in shock by listening her words as she never told me before. I said okay, she just took a condom packet from her bag and gave it to me .I just started by licking her neck and ear and I was pressing her. A hand grabbed it and stopped it in its arc. I backed away enough to see what was happening. A guy who was big enough that he didn't need the weapon – he had at least three inches over my 6-foot-2 – was poised to put my lights out permanently, but for the dark-haired guy who had stepped between us. He was about my height, maybe an inch shorter. He had the bruises to show he'd been in some serious disagreement in the not too distant past. He wasn't muscle-bound, but he looked like he kept in.