Another bead of sweat slowly dripped down my brow before falling to the floor; the three fans set up across the room doing little to combat the extreme heat that filled the house. I lay splayed out across the couch, trying my hardest not to move, while slowly drowning in my own pool of sweat. It has been four days since the hottest heat wave on record began, and three days since the AC unit broke down. Dad happens to be a handyman, but he and mom had to choose this week to go on vacation, leaving my sister Katy and I to fend for ourselves. He told me to call a repairman, but of course with this crazy heat wave the earliest appointment I could get with the guy was in a weeks' time! As another sweat bead formed and quickly joined the last, I groan in defeat of mother nature.
"Uh oh, is somebody having a hard time enjoying their summer?" I don't even bother lifting my head up from the couch. Years of living with a bratty younger sister have taught me that the best way to get rid of her is to simply ignore her until she gets bored.
Even with most of my face pressed into the couch, Katy's footsteps are still audible as she walks over and stands in front of my prone body. "You know Ben, I am beginning to question your strategy of playing dead until the heat goes away," she says, jabbing me in the side. "Heat isn't exactly the same as a bear."
"Heat might not be..." I mumble into the couch, half hoping she wouldn't hear me.
"Oh ho, what was that?" I sense her face move right up against mine. "I didn't quite hear you, you know how bad we bears are at understanding English. Could you please say that again?"
"Rawrrr," Escapes the cushions as I let out my best bear impression.
"Ohhh why didn't you say so earlier?" The creak of the floor is the only warning I have before I feel all 100 pounds of my sister land square on top of me. The air is forced from my lungs with a grunt and I start wheezing as I hear my sister say, "Of course I'll hibernate with you!"
"...Bitch..." Is all I manage to get out. My face being pressed into the cushions is not helping me refill my lungs any faster. What's worse though, is the fact that it feels as though Katy is only wearing a bikini to try and stay cool. The feeling of her bare skin pressed against mine is absolute agony in this heat, yet I can't help but enjoy the feeling of two firm breasts pressed into the center of my back. Katy has always had a fantastic body, drawing the attention of guys everywhere she goes with her toned swimming figure and long, flowing brown hair. But that's just because they don't live with her. Their eyes are so busy taking in her breasts and sex that their ears don't register all the annoying dribble that is constantly flowing out of her mouth.
Katy wraps her arms around me and wiggles against my back, "This way, we can beat the heat together!" I feel my cock twitch and start to grow in response to her constant wiggling against my bare skin. There is no way she knows what the feeling of her squirming is doing to me physically, and after six years of judo I definitely am not lacking the muscle needed to launch my sister off the couch; but she would probably notice the other muscle I'm not lacking in at the moment. With a sigh, I decide to go with the diplomatic approach.
"Katy you dick, get the hell off me," I grumble while trying to buck her from my back. "I know you're a bit ditzy, but would you try to remember your age for once?" Even at 18 she acts closer to an 8-year-old most of the time. And the worst part is our parents seem to encourage her!
Her arms tighten around me in an attempt to prevent herself from being bucked off. "Aww but we haven't cuddled like this since we were kids!" I can practically feel her pouting behind me. "Just because you've spent the last two years at college doesn't magically make you an adult you know."
"No, but all the sex and drugs I've had probably does!" I wiggle my ass against her crotch. "Careful, who knows what kinds of diseases I've picked up!"
Her arms immediately let go and the weight of her body vanishes as she quickly jumps off me. "Ew Ben, that's so gross you perv!"
I let out a sigh of relief as she turns and stomps out of the room. Crisis averted, for the moment at least. I let my face drop back into the couch, and enjoy the memory of Katy's breasts pressed against my back. Of course I never really thought of my younger sister in such a way before, but she really does seem to have grown into a beautiful women while I was away at school. Well, grown physically that is. I let my fantasies take me away as I try to go back to forgetting about the heat.
---
After going upstairs and collapsing into her bed, Katy stared at her ceiling. It was still covered with the dozens of sticky glow-in-the-dark stars that her dad put up for her when she was a little kid. Maybe she really did need to start acting her age. After all, she was going to be going off to college in just a few months. She needed to start acting more mature if she wanted to fit in. Far more mature than Ben!
Ben... Katy gently placed a hand on her stomach. A strange, warm sensation filled her belly, ever since she had jumped on top of Ben and he had ground himself against her crotch. She had just been trying to alleviate her boredom by annoying him, not a new tactic by any means, but something about this time was different.
"Why do I feel so warm?" She mumbled to herself. Was she seriously getting turned on by her own brother? She knew it was wrong, and yet, she still found her hand slowly trailing down from her stomach, over her naval, until it finally came to a stop resting on her bikini bottoms.
"This is so wrong..." She thought to herself, as her index finger slowly began to trace the material covering her sex. Up and down, it traced, until she could feel how wet she had become through her bottoms. "Mmmm..." She moaned, adding a little more pressure, while her other hand reached up under her top and began gently pinching her left nipple. She tried to imagine her ex softly biting them, like how he used to before their breakup, but she couldn't. In his place, stood a naked Ben, carefully running his tongue around her nipples before taking one between his teeth and nibbling on it.
The mental image of her brother caused her to audibly gasp and quickly yank her bottoms off, throwing them across the room. One hand immediately returned to her nipples, while the other began sliding two fingers between her pussy lips, eliciting a soft moan of anticipation. In her head, Ben looked up from playing with her nipples, and stared deep into her eyes before slipping two of his fingers inside of her. Her breath caught as she felt her own two fingers push deep inside her in place of her brother's.
"Ohh Ben, this is so wrong..." But she didn't stop slowly pulling her fingers out of her soaking hole, before immediately shoving them back in, again and again. It only took a few minutes before she could feel herself rapidly approaching an orgasm. Picking up her speed, she imagined her brother taking his fingers out of her, and replacing them with his huge cock. The thought of her brother's cock filling her up was bringing her so close to the edge. "Just a few more seconds..." She thought to herself, already beginning to feel the familiar tensing in her muscles signaling her oncoming orgasm.
