In the house she gave me a quick hug then before she went to her room hinted at more sex in the future. I would be leaving for college soon and she had earlier hinted that Cole wanted to date her so I wondered just when any future sex with my sister would happen. It was another three months before Maxi and I got together again. She started dating Cole, like her a Senior in the school and I had taken up with Angel when we found out we were going to the same college. I was home on Christmas break when Dad called me and Maxi to the front room one afternoon and told us “I’ve been invited to Company Headquarters to give a presentation on my Shipping Unit Housing ideas. The bosses want to see if my ideas for turning old shipping containers into modern living spaces has potential. Some of them are pretty radical architecture so I have to give a killer presentation.” “That’s great dad, what if they like your stuff?” Our father smiled wide “I get a bonus big enough to buy the Corvette I’ve always wanted. But, that’s not why I called you. Your mom is going with me. We leave next Thursday, horny I give my presentations on Friday then we are going to play tourist in the city until Sunday. We should be back Sunday night. You two will be alone, I trust you can handle a little free time without parental oversight?” “Dad, I’m a college dude now, I’m sure I won’t Bhabhi be lost without you for a couple of days.” He looked at Maxi “Pete takes care of me daddy, we’ll be okay.” Maxi and I had been left alone for a night or two a few times so we didn’t get all excited about having our parents gone. She made her plans, I made mine and those plans didn’t involve each other. Since the night she got dumped and I fucked her three times we hadn’t been physically involved and we hadn’t looked for reasons or opportunity to bigtits do so. We were big brother and little sister, not lovers so we didn’t anticipate screwing each other in our parent’s absence. At least not immediately. Cole and Angel were invited to enjoy some no adult free time with us somewhere bigger than a car. Maxi put pizzas on order while I went to see a neighborhood source for some weed. We started out slow with conversation, music and some mild flirting impelled by beer and pot. The pool was used for a four-person game of water volleyball and then after that I got adventurous enough to dive under the water, put my head between Angel’s long smooth legs and stood up. She was sitting on indian my shoulders and I challenged my sister and her boyfriend to a shoving contest, who could push who into the water while remain standing. Cole grabbed Maxi and swung her up to sit on his shoulders. The water sports turned into a melee of crude jokes, subtle passes and increased familiarity with a member of the opposite sex accompanied by teasing, laughter and flirting. I really didn’t care who dominated in the pool, I was concentrating too much on the soft warm pussy pressed on my neck. My cock was swelling, my libido was growing. The four of us were lounging on the pool deck devouring cold pizza and passing the bong. Beer cans littered the yard. Cole wasn’t too steady and didn’t want to chance falling over on a long trek to the bathroom so he stepped up to one naked of my mother’s Azalea bushes, pulled his prick out of his swim trunks and started pissing on the plant. As soon as Maxi saw what he was doing she yelped “God, Cole, you gonna kill that poor fucking flower!” Maxi’s outburst drew the attention of me and Angel and in seconds a chorus of hoots and cheers enveloped Cole as he peed. Angel jumped up and moved to Maxi’s boyfriend, looking around his body at what he held. Not to be left out Maxi stripping joined her then within a few seconds Cole’s cock was the focus of two sets of feminine eyes. Cole looked around at his audience then turned in a full circle giving them a complete and unhindered view of his cock while he shook the drops “Which of you two wants to try this?” he asked as they snickered at his display. Maxi grabbed his prick and stroked him, “Right now, me.” She looked at Angel and challenged lightheartedly “Anybody else around here who wants to fuck you will have to wait.” After that declaration we all drifted back to the house, me and Angel to my room, Maxi and Cole to hers. For the next couple of hours, the house echoed with faint female cries of pleasure and deep throated groans as girls climaxed and erections cramped. There was a full-blown teen orgy going on and it sounded like we were all enjoying it. It was about one in the morning when Angel finally had to leave. “Carole is home. I think I horny need something to get Bhabhi Roger off naked my mind.” My libido began to deny his gender once again. Once he was done with the clit ring he pushed her head down to get his dick nice and lubricated before he stuck his eight inches into her ass. Until I looked at the two sisters in indian bigtits front of me and asked,``You two ever played doctor together?" The sun had finally risen high enough that it was shining right in my face. “It’s warm” I said. “Ooh, I'm aching. He had an even better gift for her. The back-window’s blinds were up so I looked in… "No! No mommy. He hissed while he looked in my eyes making me nod my head no while I bit my lip. “That’s easily solved.” I said and climbed up into the ring. Doing nothing to the monster. That was a part of the next stage of her life, and I knew our relationship stripping wouldn't survive her sharing a house with her best mate, where they'd be drinking, taking drugs and partying every weekend, so I was resigned to it being over.