WARNING:
I believe that as long as people all agree on the sexual acts committed they should do so with the people they want. I do not see gay/bi or straight sex with multiple partners as doing anything wrong. Therefore one should be warned before reading any of my stories that gay/bi or straight sex with multiple partners can occur. If you are offended by any of this? Stop reading now.
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"You can't Rachel," he plainly stated. "You know what mom and dad said." Sam took another bite from his apple and resumed reading the paper.
Rachel and Sam were left alone for the next two days while their parents had decided their marriage needed a new spark and they hoped that two weeks in Aruba would do the trick. Sam had been put in charge of the household money and his dad had made it clear to the both of them that he was to keep Rachel out of trouble and he had full say over her dos and don't s. She turned 18 only a few weeks before and she was every bit her mother, both in the physical sense, having a very petite frame with long red blond curly hair, and the literal, having the same short fuse when it came to not getting what she wanted.
"Oh come on, don't be such a puss!" She said as she grabbed the paper out of Sam's hands letting out a squeal of mischief.
Distracted Sam looked up at his sibling. How often had he looked at her and turn his head down in shame as his dick grew watching her small frame and firm perky breasts. Man she was a sight. And he would do anything for her. On the other hand, Sam himself, at age 24 wasn't ugly either. Short blond with a tint of red curly hair, but perhaps his slightly skinny built which together with his length of 5'2 didn't boost his confidence much. He never really learned to stand up for himself; he was like his farther in that sense.
Rachel was even smaller at 5'1. She had kept her hair long as all her friends around her had cut theirs short, so now at the age of 18 her long blond reddish hair almost came to her butt. Those big brown eyes grew wider as she stood before him smiling. "You want this?" she spoke as she held up the paper. "Come and get it then!" She ran through the open patio door laughing. Sam couldn't suppress a small smile as he watched her bikini clad ass run out. Who wouldn't give chase?
As he walked out into the backyard he saw his paper laying on the ground his sister nowhere in sight. As he bent down to pick it up he suddenly was refreshed as big splatter of water shot up from the pool. "Heehaw! Got ya!" Rachel squealed with delight as she looked up at him from the water.
"Nice sis, thanks for that. And I'm already late for work." he looked down and sure enough his sweater was soaked.
"Pff just call in sick, come have a swim with me!" she retorted as she put her feet at the edge of the pool and pushed herself away. As Sam looked at his sister doing a back crawl his eyes immediately went to her bikini covered breasts. The flimsy material was barely enough to suppress her pointy breasts. Man the things he would do to a chick like that if she wasn't his sister. He must have kept staring a bit too long because suddenly he was broken from his dream as he heard her say "See anything you like?" She had a puzzled look on her face as she drew a small smile knowing fully well what he was looking at.
"Huh what?" The realization he was oggling his sisters breasts came flushing back to him and suddenly he was without words. Rachel saw the discomfort written on her brothers face and decided to tease him some more. She knew how to play him and maybe he would let up and give her what she wanted then. She stopped swimming and walked towards the shallow end of the pool, her petite frame coming into full view. She dried the water from her hair with her hands and drew a big grin. "Its ok you know. I like it when men look at me. Makes a girl feel sexy." She seductively let her hands flow down her curves to her hips as she stood at the edge of the water looking up at her brother.
"Wha... yo... you shouldn't speak like that Rach. If mom and dad could hear you they would throw a fit." Sam spoke agitated, he knew his sister was a careless tease but this was pushing it even for her. "Hah! You should hear mom talk when you and dad aren't here. Women are supposed to drive men insane." She was grinning now. That was just like her, coming up with ridicules lies about their mom. "So what do you say? Care to spend a day lying about with your little sis?" She had gotten out of the pool and was climbing up the diving board. "That is if you can stand to see my female form jiggling that is!" She was laughing at her own cruel joke as she bounced on the diving board causing her tits to bounce with her. Her skimpy bikini barely constraining her white c cups.
As he watched her he felt blood rushing into his dick as it started to grow. "I guess there are worst things" he mumbled to himself making sure Rachel didn't hear him. "What was that?" She spoke as she paid him no attention and finally jumped back into the water. "You're right. Sun is shining and I really could use a day off. I'm going to call in sick, then ill start the barbeque." "Woo woo!" Rachel hollered from the other side of the pool. "Look out world! My brother is finally letting loose and enjoying life!" She raised her hands above her head, causing one boob to nearly pop out.
Sam couldn't help but smile at that. "Better watch out that nothing else pops loose." He replied clearly meaning her breast. She looked down and smiling she tugged at her bikini top. With one final glance at her luscious body he headed into the house to call his work.
Sam came out, dressed in his swim pants and a towel over his shoulder. Rachel yelped, peering over her big sunglasses from where she was lounging on a chair. Her pale skin was soaking up as much sun as it could take.
"Don't have to call back in until Monday." He replied as he made his way to the stone grill. "Great!" She exclaimed as she jumped up and strode towards him. "Sam? Can I please... please call Owen?" She stood next to her brother, her breasts almost brushing his side.