It had one double bed and a fresh water stream running by the door.Since she was not going to be at home Julie thought she had better ring her husband...Roger in California before they left so that he would know where they were.She went into her own bathroom and sat on the toilet. Timmy and Sally sat on the bed opposite the open door and watched her as she urinated the nights piss into the bowl.“Hey guys listen” she said “I’m going to call Roger in California so don,t let him hear you two. Being 16 and having the hottest sex to date I had nothing on my mind other than pussy. It seemed that it wasn't going to happen tonight which was alright because I did fuck my sister at least 3 times a night for the last nine days however, at that age do we ever get enough ?. I laid down knowing what I had to do to get some sleep. I typically sleep nude so I simply rolled onto my back and started stroking my dick while imagining I'm fucking my sister and alternating between her and my. That's how Casey came to live with us. I really didn't mind at first cause I got to check her out all the time. She wore tight tops and pants all the time and just a long T shirt as a night gown. I always got a look at her panties or a thong which me hard fast. I think she knew she was teasingme with bending over in front of me and sitting with one leg up on the couch giving me a view. I would go to bed and jump mywife and have sex for a hour or so. But she became a bitch more and more as. I could see one of her feet making small circles. “Well, normally in my dorm I sleep in the nude.” Her eyes looked back at me and she had a devilish little grin. “I can’t really do that when I am sharing a bed with my sister, so this nightshirt is the closest I can get.” My mind was spinning. Did she just tell me she was naked under that shirt? Red flag time! I really needed to go. Unfortunately, before my brain could make my feet move she continued. “The problem is, when the material rubs.