WICKed Hormones Ch. 15

However, Jacob didn't stop. Instead, he used the trick which Rachel had taught him and gently massaged her crinkly orifice with the pads of his thumb and index finger. Increasing the pressure, he noticed his sister's eyes slowly narrow until they closed, and she bit her bottom lip in an attempt to stifle a moan. When Rachel didn't rebuke him any further, Jacob used additional pressure until the tip of his lubricated finger slipped inside his sister's tight little hole up to the first knuckle.

Rachel's eyes immediately shot open, and an unintentional gasp escaped her mouth. Remembering in horror that her husband was on the other end of the line, she turned back around and replied, "Sorry, honey...I got distracted. There's this uhhhh...horrible news story on TV."

Rachel closed her eyes and bit harder into her bottom lip as Jacob's exploring digit burrowed deeper and deeper into her clutching anus. The incredible sensations caused her to raise her pelvis off the mattress, then slide her left hand underneath her belly down to her crotch to begin strumming her blood-engorged clit.

The yearning quest for the orgasm which Scott had unknowingly denied Rachel earlier was quickly rebuilding, and she knew she needed to end the call with her husband as soon as possible. Trying her best to keep her voice from shaking, Rachel asked, "So, ummmm...how much longer 'til your meeting? If you need to hang up now, I...I totally understand!" The young housewife was becoming desperate...more and more she was finding it harder to hide the risky lilt in her voice as she spoke. Rachel knew she couldn't in good conscience remain on the phone with her husband while diddling herself to a climax and, at the same time, having her baby brother's finger jammed up her tight little pooper.

Jacob then upped the ante even further by adding more lube and a second digit to the anal-fingering assault he was giving to his sister's greasy asshole. The additional stimulation caused an accidental shriek to slip past Rachel's lips, "Oh, shhhit!!"

With as much control as she could muster, Rachel explained her outburst to Scott. "Sweetie...I just noticed the time. I need to start getting ready, so I can pick up...mmmmmmm...Jake from school. So, I'm gonna...oh jeeze...get off now... I mean, get off...the phone...oh my God...okay??" Again, she desperately hoped that the frantic tone in her voice wasn't misconstrued by her husband, or that he caught on to the actual cause of her frenetic desire to end their phone call.

As the climactic wave of a thunderously approaching orgasm continued to build, Rachel mindlessly raised her hips up higher in the air to assist Jacob and his angle of attack. The teenager's wildly thrusting fingers were mere seconds away from bringing the busty, honey-blonde beauty to a screaming anal orgasm. Beginning to panic that she might lose total control, the loving wife abruptly ended the call with her oblivious husband, "Okay, sweetheart...see you tonight...love you!"

Not even waiting to hear Scott's reply, Rachel hit the 'end call' button (or at least she hoped she did) and tossed the phone aside, landing with a soft 'thud' on the carpeted floor next to her wedding photo. Now unfettered with the freedom to fully express her joy, Rachel called out, "Oh yes...yesss...YESSSSSSS!!!" However, the rising tide of her desperately-sought for tsunami abruptly receded when Jacob removed his pistoning digits from her butt, and she was once again denied her glorious orgasm.

Feeling disappointed by the sudden, empty void in her ass, Rachel whined pitifully in denied arousal and frustration, "Awwww, Jake! W--why...did you stop?" Her complaint was quickly assuaged when she felt the spongy tip of her brother's monstrous cock press up against her well-lubricated back door.

At first, Rachel considered denying Jacob's advances. After all, their original deal had been that he could only have her ass again when he finally announced his official choice of schools-- namely, The University of Georgia. However, the powerful, inebriating effects that the wicked hormones were having on her, and having been edged to the precipice of orgasm twice now with no relief, was causing Rachel to strongly reconsider that former agreement.

As the delicious pressure against her sensitive rosebud intensified, Rachel thought back to the previous 'negotiating' session which she'd had with her brother. It was during a stormy afternoon at the rental house, when she had first experienced Jacob's fleshy beast pillaging her most intimate orifice. Afterwards, it had taken almost an entire week for her battered rectum to fully recover from the vicious assault she'd received. However, the incomparable pleasure Rachel had experienced from the entire, excruciating ordeal had, in the end (pun intended), made it all worth the while to her.

Feeling Jacob's grip tighten on her curvy hips, Rachel finally waved the white flag of surrender. The horny older sibling stretched her arms forward and thrust her rear end high up in the air, entering an obscene-looking extended 'young puppy' yoga pose. With the side of her face resting on the mattress' silky comforter, she softly instructed, "Remember, bro...take it slow."

Even after having used multiple fingers to loosen up Rachel's tight little asshole, Jacob found his sister's rubbery anal ring somewhat reluctant to allow him entry. As he pulled on her fleshy hips and applied more pressure to the stubbornly resisting orifice, he grunted, "Don't worry, sis...I know exactly what to do." Once he felt the glans of his cock pierce through the final barrier and ensconce snugly in the threshold of Rachel's rectum, he added, "Now...it's my turn!"

"OHHHHHHHHWWWWWW SSHHHHHIIITTTT!!" Rachel yelped, her eyes bulging out as Jacob's massive fuckpole barged its way in one swift thrust several inches into her butt. "Watch it, dork!" she scolded her brother. "What part of 'take it slow' don't you understand??!" Fortunately, her body remembered from their last go-around to immediately re-adjust, and the sharp pain quickly faded.

Jacob half grinned. "Sorry, Rach!" he replied, and pulled back to where only the bulbous head of his throbbing cock remained just inside of his sister's stretched-out anus. He then teased, "Do you want me to stop?"

Now that the initial pain and discomfort she felt had totally vanished, Rachel's animalistic arousal returned with a vengeance, and along with it, a sinful, feral desire to be completely filled and thoroughly fucked by her little brother. "Noooo!" she whimpered in response, "Don't-- "

Before Rachel could even finish her statement, Jacob thrust his hips forward, sliding the entire length of his greased-up, veiny shaft with violence deep into his sister's upturned ass.

Now fully overcome by the wicked hormones and the utter depravity of it all, Rachel grunted with an almost primal growl and moaned, "Ohhhhh, yessss...FUCK MEEEEEEE!!!!"

"You got it, sis!" Jacob happily responded, and did exactly as Rachel requested. The eagerly-horny teenager quickly began buttfucking his beautiful sister with full, steady strokes, increasing his tempo as the aching load in his testicles continued to build.

Rachel remained in the same yoga position with her hands tightly clutching fistfuls of her marital bed's soft comforter, as she held on for the ride. She constantly cried aloud with each ass-stretching plunge of her brother's impossibly-sized dick plundering the depths of her bowels, until finally she reached the onset of her long-awaited climax. "Yes...YESSSSSSS!! I'm...I'm gonna...CUMMMMMMM!!"

Lifting her head from off the mattress, the married sister ordered her brother, "Don't stop, dork! Don't you dare!! Oh Yes!! I'm...I'M...CUMMMMINNNNGGGG!!!! AAAAAHHHHHHHHH!!!!!!"

Rachel needn't have been worried. The word 'stop' simply wasn't in Jacob's current vocabulary. He continued plowing into her backside while she lurched about, utterly consumed by her thunderous orgasm. At the same time, he was enjoying the enthralling view. The cushiony flesh of Rachel's perfect, bubble-shaped behind rippling each time he slammed into her ripe and juicy bum was truly a sight to behold!

When one of Rachel's shrieks of rapturous ecstasy hit a particular note, Jacob's thoughts suddenly wandered. He'd previously toyed with a similar idea the other day with Ms. Turner, but this time the illusion was triggered unexpectedly...almost naturally. In that moment, Rachel sounded eerily like Karen and in his mind's eye, he was no longer violating his gorgeous, married sister. Instead, it was his piously-conservative Mother's wide, curvy hips he held on to, as he furiously pounded her from behind. His cock suddenly felt like it grew another 10 inches, as he imagined himself reaming his Mom through her formerly straitlaced, uptight asshole and taking her final and forbidden anal virginity.

Spurred on by this new, lewd image lustfully seared into his psyche, and fueled by his desperate need to relieve the pressure in his painfully-swollen nuts, Jacob's legs and hips went into overdrive. He began mercilessly pounding his throbbing manhood in and out of Rachel's sensitive rear passage, hell bent on finally lighting the fuse and igniting the explosion of the heavy load that he'd been brewing all day in his balls.

Thanks to the vicious fucking she was receiving from Jacob's relentless ass-buster, Rachel was quickly approaching another mind-scrambling orgasm. With the palms of her hands pressed flat against the upholstered headboard, Rachel vainly attempted to steady herself, grunting in between each gut-wrenching plunge, "Jake...unghh! You think...you could...unghh!! Maybe...slow down...unghh!!! Just a...bit??"

Two more words that simply weren't in Jacob's vocabulary at the moment: 'slow' and 'down'. Instead, he got into a crouched standing position and began pummeling Rachel's quivering ass with wild, total abandon. Using his legs for leverage, the determined young teen resembled an untamed, savagely mating monkey. Nothing was going to stop him now, as he steadily felt the painful load in his testicles coming to a boil. He was dead set on emptying the entire contents of his broiling nutsack deep inside his imaginary 'Mom's' hot and forbidden, married ass, consequences be damned! The teenager's hips became a blur, as he growled in response, "Can't...gotta...FINISSSSHHHHHH!!!"

"Oh, shhhhhhhhhit!!!" Rachel hissed, as she clawed in desperation at the soft, linen-upholstered headboard of her and Scott's brand-new, king-sized Marseille bed. "Jake!! Oh my God...pleeeeeeeease!!!" The young housewife was about to climax, and once more it was surely going to be epic. However, this time, she sensed something was different.

With each of Jacob's brutal downstrokes, Rachel could feel a strange pressure building up deep inside of her empty vagina. She began to fear what this new and unusual sensation meant, and pleaded with her inattentive brother, "Jake! Something's...wrong!! Pleeeeeeeasssssse...slow down!!!"

Jacob ignored his sister's desperate pleas because, in his mind, he was about to reach his ultimate goal and bust a nut deep inside of their prim and proper Mother's glorious butt. Cinching his eyes tightly shut and gritting his teeth, he grunted his response, "Sorry...but I gotta...CUUUUMMMM!!!" With one final, violent thrust and a savagely feral growl, the teenager buried himself balls-deep inside the tight clutches of his sister's rectum. "AAAAAAHHHHHHH!!!" he threw back his head and bellowed in relief as the floodgates finally opened, and he released the entire afternoon's pent-up load of his thick and sticky jism straight into the fiery depths of his sister's battered bowels. The extra motivation of imagining it was his Mom's ass he was violating caused his flopping nuts to clench up extra tight each time they grinded out hot, streaming ropes of his sperm to deposit deep inside Rachel's ravished ass.

"Holy shit!!! I'M...CUMMMIIINNNGGGG...AGGAAAINNNNN!!!!" Rachel squealed in response, as the powerfully-thick blast of her brother's white-hot spunk plastered the ravaged depths of her ass...its soothing heat sparking off another mind-numbing anal orgasm. Suddenly, the pressure inside of her quivering pussy released a torrential gush of hot girl-cum that erupted from her cunt, splashing onto Jacob's wildly-swinging balls, and giving Rachel her first ever squirting orgasm.

Rachel could feel the otherworldly throes of her climax echoing in both her ass and pussy for what seemed like forever. The electrifying sensations dancing throughout her central nervous system had her body wildly convulsing from sheer sensory overload. The agonizing pleasure was so great that the young housewife began to fear the excruciating euphoria would never end, and that her brother would quite literally 'fuck her brains out'. She began to blabber incoherently, as if speaking in tongues, but somehow in her state of utter delirium she was able to get out four cognitive words: "Dear Lord...help meeeeeeeeeee!!!" Suddenly, everything went dark.

Minutes later, Rachel lay face down on her stomach after having passed out cold. Eventually, the housewife's eyes fluttered open as she slowly came to, trying to comprehend where she was and what day of the week it was. Her memory suddenly returned when she noticed the weight of her sweaty, naked little brother lying flat atop her prone and equally-nude, clammy body.

The side of Jacob's face was pressed against Rachel's left shoulder, and she could hear the gentle sound of him snoring. Evidently, they had both blacked out and collapsed in total exhaustion from their latest round of 'negotiating'.

As Rachel lay there, allowing the fog in her mind to clear, she sensed an unusual, bloated feeling in her abdomen. It was only then when she realized that Jacob's semi-rigid penis was still jammed up deep inside of her freshly-fucked rear passage. Her tender orifice instinctively clutched at the foreign invader lewdly ensconced within the confines of her ravaged rectum. Flexing the sore muscles of her poop-chute in a mixture of both annoyance and lingering pleasure, Rachel at once felt the warmth of what she knew to be more of her brother's hormone-laced semen spluttering into her, adding to the distension she could still feel in her stomach. With a moan, Rachel flopped face-down onto her mattress and dozed off for a short snooze, before turning her head sideways with the curl of a smile on her lips.

A ray of warm, October sun shining on her face finally caused Rachel to lift her head back up, just enough to make out the time on Scott's alarm clock. Upon seeing that it was already nearing 3:00 p.m., Rachel gasped. Pushing upwards with her elbows, she whispered sharply, "Jake...wake up! We gotta get going!" The only response from her slumbering little brother was a groan of annoyance, as he gently squeezed one of her soft breasts. Somehow or another, the teenager had managed to snake his right hand underneath Rachel's chest for a naughty reach-around while they slept.

Shrugging aggressively with her shoulders, Rachel tried once again, this time more sternly, "C'mon twerp...get off of me!"

Lifting his head, Jacob said, "Okay...okay...I'm up." He then smiled and added, "Dang Rach...that was a good nap!"

It was in fact, the best that he'd slept in quite a while. The only time better had been in Atlanta with Karen after their marathon fuck 'session', when he'd passed out whilst suckling on his beautiful Mother's tit, and then peacefully slept the night away with his face buried in her pillowy bosom.

Raising back up again onto her elbows, Rachel replied, "Yeah, well...glad you enjoyed it, but unfortunately naptime's over. It's getting late, and we both need to go take a shower before I take you home."

Jacob agreed, "Yeah I definitely need one...especially after you pissed on me earlier."

Rachel asked with confusion, "'Pissed on' you? What are you..." She then scoffed, "I didn't pee on you moron...you made me...uhhhh...squirt."

Jacob couldn't help but smile with pride and ask, "Really?? Was that your first time doing that?"

Now feeling a bit embarrassed, Rachel nodded while looking down at the comforter.

"Well..." Jacob commented, "I guess now we know what your 'hormone superpower' is!"

"Superpower?" Rachel asked, cringing slightly at the nerdy notion.

Jacob nodded, "Yeah...Mom has her squirting tits and you have a squirting pussy. Sounds like the making of an awesome Mother/daughter super-heroine comic book!"

Rachel groaned and shook her head, "Oh my God...you are such a dork!!" She still had trouble understanding how Sara Miller could possibly be attracted to her nerdy brother.

Suddenly an idea then popped into Jacob's head. Leaning into his older sister's ear, he whispered, "So, whatd'ya say 'Squirt'...how 'bout we shower together? I think I'm gonna need another go." Grinning goofily, he ended his statement by playfully groping again at his sister's round and juicy boob.

Looking back over her shoulder, Rachel replied emphatically, "NO!" Her tone sounded strangely familiar to that of their Mother's. "And don't call me that, nerd! That's my nickname for you!"

"Well, why not?" Jacob asked, ignoring her last comment. "You said it yourself...we both need to shower." He then whispered, "Maybe I could try and make you squirt again."

"Jake...I said no, and I mean NO!" Rachel responded, sounding even more like Karen Mitchell. Now somewhat sobered from the hormone's effects, the young housewife once again felt the pangs of guilt tugging at her heartstrings as she caught sight of her and Scott's wedding photo fallen on the carpet. "I'm gonna use the shower in here, and you can go use the bathroom down the hall..." she sternly added, while pointing in that direction.

Deciding it was best not to keep pushing his luck, Jacob relented with a disappointed sigh, "Oh, alright."

Rachel then thought to herself, "Could Scott and Jake be onto something? Am I starting to sound a lot like Mom??" She then began to feel bad for having scolded Jacob in that manner, merely for asking if they could shower together. As she felt Jacob's weight lessen on her back when he began to rise up, she turned her head and said over her shoulder, "Hey..."

Leaning back down, Jacob replied, "Yeah?"

Rachel whispered, "Look...about the shower. Maybe some other time...okay?"

Jacob knew his sister well enough to know that this was her way of expressing regret for her outburst. He smiled and replied. "Okay!"

As Jacob began to move again, Rachel was quickly reminded that they remained very much coupled together. Even though her brother's cock was only half-erect, it still felt like she had a huge buttplug up her ass. "Easy, Jake," she warned him. "I'm a bit sore back there. So, when you pull out...do it...slowly."

Rachel grimaced with gritted teeth as Jacob's enormous 'snake' slithered its way out of the depths of her bowels. "Ohhhhh..." she moaned in a strange mixture of pain and relief. With an audible *plop*, her brother's fleshy monster exited her throbbing rectum, and at the same time eased the uncomfortable pressure in her abdomen.

Jacob sat back on his haunches and watched in awe, as a torrent of his cum gushed out from his sister's yawning butthole. The flood of semen poured like a slimy waterfall from her gaping-wide cavity and oozed all over the lips of Rachel's leaking-wet vagina. Mingling with her secretions, the nastily kinky mixture finally flowed onto the dark blue comforter, staining it with a frothy, white, cascade of brother-sister cream.