Upside Down

Note : This story is completely fictional!

Rachel bit her lower lip and whimpered meekly as she neared a frantic orgasm; her nimble fingers nothing but a blur as they deftly manipulated her burning clit. The beautiful blonde then moaned out and grabbed her sheets with her free hand as her hips began to thrash. Her whole body shook violently as a flood of sensation flashed through every part of her being, before slowly retreating to its epicenter between her trembling legs.

She panted erratically, trying to regain her breath, as her fingers slowed their rotation and her hips finally came to rest. After an infinitely deep breath the young blonde pulled her hand from her spent pussy and let it drop gracefully onto her bare stomach. She groaned weakly and allowed herself a sly smile, the type of smile that only accompanies complete satisfaction.

Rachel lay on her bed and traced a finger delicately across her flat belly and around her navel, her thoughts reluctantly shifting from her mind-blowing orgasm, back to reality.

The intense pressure of the last month had allowed her little time for frivolous thoughts or activities. Now however, with her finals done and her first year of college safely behind her, the nineteen-year-old planned on nothing but frivolity for the next few months.

After a short rest she lazily rolled out of bed and wrapped herself in a robe before heading to the bathroom for a much-anticipated shower. 

She spent the better part of the day unpacking and catching up with her mother, Sara and her seventeen-year-old sister, Trisha. Her father, Dan, had left for work long before she woke. They were a close-knit family and although they spoke often while she was away, there were still plenty of stories to exchange, which the Brooks women did at length.

The next few days were spent getting used to living back at home again. It was pretty uneventful. Other than hanging out with her old friends, Rachel was content spending most of her time lounging around and allowing her tired brain time to refuel.

It was as she was lounging out by the pool on the following Thursday afternoon that Sara informed her she and Dan were going to the Cape for a long weekend. They were leaving the following morning and wouldn’t be back for a few days. It was nothing new; her parents owned a vacation house right on the ocean they visited often. 

The next morning, right after her parents left, Trisha was on the phone inviting a bunch of her friends over for a party that night. Rachel laughed as she thought back to all the parties she had thrown while her parents were away; now seeing her younger sister doing the same thing sparked happy, nostalgic feelings of the not-too-distant past.

She had plans to meet her friend Stephanie at the mall to do some shopping and told Trisha she’d be back in the early afternoon. As she drove to the mall, she found her thoughts drifting back to school and the event that had her masturbating twice daily since its occurrence.

It was the third straight night of relentless studying for Rachel and her roommate Emily and they were both beginning to go a little stir crazy. They decided to take a break to blow off some steam and ended up going to a big off-campus party. By the time they stumbled back to their room, they were both wasted. 

She wasn’t quite sure how it started but she clearly remembered what happened. Somehow she and Emily had ended up in the latter’s bed and they were making out passionately; Rachel’s pussy dampened again as she recalled the event, which ended with Emily fingering and rubbing her to the most powerful climax of her life.

They fell asleep in each other’s arms but awoke in different beds. Rachel was afraid to say anything, and after Emily had acted like nothing happened, she decided she should just forget about it. But she couldn’t.

She managed to suppress her thoughts during her time with Stephanie, planning on taking matters into her own hands again back in her room.

When Rachel arrived home, she kicked off her shoes and stopped in the kitchen for a glass of water. As she took a deep drink, she heard a faint laughter coming from the pool area. Rachel peered out the window and smiled broadly at the scene. Trisha and her friend Katie were in the pool, which in itself was no big deal; it was the fact that they were nude that caught her attention. 

With her thoughts already clearly on the female form, Rachel had a dirty idea. She put her glass down and hurried into her father’s study; the closest part of the house to the pool. Once inside she carefully opened the shades, affording her a perfect view of the whole area.

She felt her heart thump and a heat build between her legs as she stared through the blinds at the naked girls by the pool. Rachel’s blue eyes scanned Katie’s tight little body lustily until she inevitably shifted her attention to Trisha.

The instant her gaze fell on her sister, the difference was obvious. She stared at the younger girl with wide-eyed admiration; her body was absolute perfection. Her breasts had grown into beautifully shaped, ultra-firm C’s. Her stomach was so tight it was nearly concave and her butt was flawless. 

Rachel forced herself to look away from Trisha and instead tried to focus on Katie. But it didn’t work for long. It seemed almost involuntary to her, the way her eyes were drawn back to her younger sister’s naked form. She reminded herself that she was peeping on her own sister, in a weak attempt to dissuade her mind’s desire. But ironically, that only fueled the fire.

She slipped off her jeans and panties and sat down slowly in her father’s office chair, noting the contrast of the cool leather on the heated skin of her bare ass. Her right hand was immediately tracing deliberate circles over her hot pussy as her left slid under her shirt and began to tweak one erect nipple.

Rachel cooed and shifted a little in her seat as her stare moved up and down her sister’s impossibly beautiful body. The water droplets beading off her smooth tanned skin, her wispy, neatly shaved pussy and hard, half-dollar sized nipples completing the most striking picture of feminine beauty she had ever laid eyes on.

Within minutes she was in the throes of another earthquake of an orgasm. Thoughts of feeling and tasting Trisha’s naked body flashed persistently through her mind; the shame of the taboo only serving to feed the orgasm’s voracious appetite as it consumed her wholly.

When the tide of ecstasy had finally ebbed it was replaced by a wave of instant regret. She reached down and pulled her jeans back on hastily before closing the blinds and quickly retreating to her room.

Rachel threw herself down on her bed and buried her head in her arms. The guilt and shame she felt seemed to physically weigh her down.

“What’s the matter with you?” she asked herself out loud.

. However, as she battled with her newfound desires, images of Trisha’s nude form crept into her conscious, interrupting her. After about fifteen minutes of deliberation, Rachel half-heartedly decided to simply suppress her dark desires. She figured the task to be cut and dried, what other choice did she have? The alternative, it seemed, was just not an option.

The blonde pulled herself off the bed with a renewed sense of confidence and headed back down to the kitchen for a fresh glass of water. As she poured her drink the sliding glass door opened and in came Katie and Trisha, now wearing their sparse bikinis.

Rachel nearly dropped the pitcher as her eyes were drawn directly to her sister’s proud breasts, whose hard, dark nipples were plainly visible through her white top. She quickly attempted to compose herself.

“Hey, Rach!!” Trisha exclaimed as she smiled warmly and approached her sister.

“Katie, did I tell you how happy I am that my sister is home?” continued the younger girl before hugging Rachel tightly.

It was in that moment that Rachel’s fragile plan, barely in its infancy, was snuffed out. Feeling Trisha’s body against hers, their breasts pressing against each other, her sister’s nipples so hard, like syringes injecting lust directly into her blood. She tried to hide her trembling as her sister held her close and continued talking to her friend playfully.

“And Rachel doesn’t know it yet but she’s hanging out with me and my friends tonight because I’ve missed her sooooo much and she doesn’t want to make her little sister cry … right?”

Rachel managed an uncomfortable smile and agreed to hang out at Trisha’s party that night. Her head throbbed as her sister mercifully ended her playful embrace and slowly walked away towards the stairs. Rachel couldn’t help but stare at Trisha’s beautiful ass in the slight bikini bottom as she left the room.

The older girl allowed herself a deep breath as soon as the girls were out of the kitchen. She couldn’t understand her sudden obsession, couldn’t even begin to, actually. She knew it was wrong, and really wrong, but she couldn’t deny its tangibility. Besides, she couldn’t get the feeling of Trisha’s body pressed against hers out of her mind, making it impossible to concentrate on much of anything.

She holed out up in her room for the following few hours, trying in vain to avoid stoking the fire.

It wasn’t until nine o’clock when she finally made her way back downstairs. There she found the party beginning and grabbed herself a beer. The first hour was pretty uneventful, but by its end there were a good fifty high school kids partying throughout the house.

Rachel made it a point to avoid Trisha as much as possible but just before ten, her younger sister found her.

“Hey you!!! Come, come, come, come …” the 18 year old said quickly as she grabbed Rachel’s hand and led her into their father’s study.

Trisha closed the door behind them and they joined Katie, Jessica (another of Trisha’s close friends) and two guys, Justin and Tim. Trisha introduced her sister to the guys before nudging Justin purposefully.

He smiled and pulled a small Advil bottle from his pocket and popped the top off. He then tilted the bottle and poured five white pills onto the desk. Rachel recognized it as Ecstasy right away and shot her sister a surprised, but not disapproving look. She was no raver but Rachel had done E five or six times and had really enjoyed it each time.

They each popped a tab then smoked joint, compliments of Tim, and by the time they rejoined the party Rachel was feeling much looser. The situation with Trisha didn’t seem as big a deal, such are the temporary healing properties of alcohol and drugs.

A half an hour later Rachel was beginning to roll and found herself dancing in a circle with Trisha and about eight of her friends. Her inhibitions, along with her previous concerns were suddenly gone entirely and she found it impossible not to watch her sister dance.

An arm then surprised Rachel around her waist as someone began to grind into her from behind. She turned her head to find Justin smiling at her. She smiled back and began to grind her tight ass hard against him in response.

It had been a while, excluding her experimentation with Emily, since Rachel had fooled around with someone and Justin was pushing all the right buttons. The Ecstasy heightened her sense of touch immeasurably so that his hands sliding across her flat stomach and up and down the sides of her hips seemed to generate an electrical charge on her skin.

After a few moments she turned to face him and they continued to grind into each other hard. He then grabbed Rachel’s ass with one hand and squeezed it tightly as he brought his mouth to her ear.

“You are SO fucking hot,” he rasped before nuzzling his face against her neck.

Under normal circumstances Rachel would’ve taken exception to a guy grabbing her ass so soon, and right in the middle of a crowded room. But his attention seemed to make her forget, at least temporarily, about her sudden incestuous desires.

The blonde turned around again and resumed grinding her firm, little ass into the younger guy’s hips to the thumping beat of the techno; her mind narrowing it’s focus on nothing other than the beat and the feeling of Justin’s body rubbing against hers.

After a few songs, Rachel decided she needed a fresh drink and Justin tailed her closely to the kitchen. Once they each had a new beer, he took her hand and wordlessly led her towards her father’s study, picking up Trisha on the way.

The music pumped loudly through the study’s speakers as Justin closed the door and backed the two sisters against it, side by side. He then moved in and began to kiss Trisha deeply.

Rachel could only stare dumbly as they kissed, their tongues wrestling frantically mere inches from her face. When he broke his kiss with Trisha, Justin immediately moved in on Rachel. 

Rachel was shocked as Justin kissed her and quickly pushed him away. She immediately looked over at Trisha, waiting for an angry tirade, but instead found her younger sister giving her a devious smile. Trisha then reached out and pulled Justin’s face close to Rachel’s again. 

He kissed the blonde girl hard again. Rachel responded this time and accepted his hot tongue as it darted into her mouth forcefully, snaking deep down her throat before retreating. 

He traded off kissing the sisters a few times until Trisha moved behind him as he kissed Rachel’s neck and slowly began to unbutton her shirt. She kissed him back hard as he removed her shirt then unhooked and discarded her bra.

When she opened her eyes again, Rachel felt a rush of heat to her head as she found Trisha staring lustily at her. The younger sister had removed Justin’s shirt and was caressing his chest from behind as he kissed her sister’s neck and began to pinch one of her nipples. Rachel’s whole body trembled and she made no attempt to hide her eyes from Trisha.

Their stare was broken only when Justin intervened, gently pushing Rachel to her knees as Trisha dropped his pants. The blonde watched closely as her sister pulled down Justin’s boxers, revealing his fat, hard cock swaying directly in front of her face. Trisha grasped his thick shaft from behind and put his throbbing head right at the tip of her sister’s mouth. 

Rachel gently closed her lips around his fat head as her sister’s petite hand glided up and down the guy’s hefty trunk. Her eyes then trailed upward as Trisha released Justin’s cock, stepped around to his side and began to kiss her friend deeply. Rachel gripped Justin’s cock tightly at its base and began to suck him harder as she watched the two of them kiss passionately.

Trisha then gracefully dropped to her knees beside her sister and moved her pretty face in close. Rachel nearly froze but managed to take her mouth off Justin’s cock and offer his glistening rod to her. The sisters’ eyes remained glued to each other as Trisha began to suck his big dick.

Rachel was on fire. Watching Trisha slurp at this guy’s cock, just inches away, was nearly more than she could handle. She wanted so desperately to taste her sister’s tongue, feel her hands all over her body; but that was a line that even in her clouded state of mind, she was unwilling to be the first to cross.

They took turns sucking Justin off, each watching the other closely during their time, until he eventually pulled them up and kissed them both wildly. He then slipped Rachel’s jeans and drenched panties off in one smooth motion. The blonde groaned softly as he kissed her again and began to gently stroke her swollen pussy lips.

Trisha stepped back so she stood about five feet away and slowly removed her shirt. Rachel stared unabashedly at her sister as she bit her lower lip and let out a whimper in response to Justin’s middle finger sliding into her hot, little pussy. Her eyes followed Trisha closely as the younger girl finished taking off her clothes before sitting down in her father’s chair. 

Justin then bent Rachel over the opposite side of the desk and the blonde let out a breathy moan as he pushed his fat cock inside her. Trisha hooked her legs up over the arms of the chair, spreading her gorgeous pussy wide, and began to rub her juicy cunt. Within moments Justin was fucking Rachel fast from behind. Her gaze constantly shuttled between her sister’s glistening pussy and her dark eyes as she held tightly to the desk.

“Yeah … fuck her hard, fuck her HARD!!” the little brunette hissed as she fingered herself and watched lustily.

To hear those nasty words come from her sister’s mouth, brought Rachel to the brink and she began drive her tight ass back hard into Justin. He reached around and squeezed one of her firm tits tightly as he picked up the pace even more.