Dearest Jacob
Copyright© 2021 by AsentoCrescendo
Chapter 7 Anything But Pure
Erotica Sex Story: Chapter 7 Anything But Pure - Jacob corrupts his clueless, 18 year old little sister, causing her first date to fail spectacularly. Now it seems like only he can show her "true" love. But what he didn't realize with that act, was that he had fallen off a cliff into a pit of wickedness, and there was no lifeline. With taboos getting shattered, how deep does his depravity really go? More tags will be added when they come up in each chapter.
Caution: This Erotica Sex Story contains strong sexual content, including Ma/Fa Fa/Fa Coercion Consensual Drunk/Drugged Reluctant Lesbian Heterosexual Fiction Cheating Incest Mother Son Brother Sister BDSM DomSub MaleDom Humiliation Rough Spanking White Male White Female Oriental Female White Couple Cream Pie Masturbation Oral Sex Petting Voyeurism Hairy ENF
With Brooke now in the room, the three girls enjoyed themselves much more, although they would be reluctant to admit it. Brooke was just so quick to deliver jokes and teasing that made the room heat up several degrees and caused them to blush and laugh.
With the last piece of old clothing gone through, Brooke smirked and chuckled, “Now that we’ve gone through all that stuff, you have got to show us what your boyfriend got for you.” Rebecca blushed at that and Laura showed some curiosity, already resigned to the fact that it would probably be somewhat provocative.
With an awkward little chuckle, Rebecca went to her packed away clothes and picked out a few of the more conservative pieces. Each piece was still able to improve Rebbecca’s natural looks, giving her a charm that was hard to describe.
As the clothes got more and more provocative, with Brooke and Laura both genuinely praising her in their own ways, Rebecca began to feel a warmth inside her. She was forced to realise once more just how smart and right Jacob was.
These pieces of clothing were getting her so much reaction from her two best friends that she actually started to feel truly pretty. It boosted her confidence and along with that warmth, she wondered if this was how it would be with Jacob.
Absentmindedly changing into another outfit, she imagined the scene; holding hands, Jacob would introduce her to someone as his girlfriend and they would both be complimented because of her beauty. She would be such a great representative for him and just be beautiful. ‘A beautiful girl worthy of Jacob.’
She was broken from her reverie as Brooke whistled and praised, “Hot damn you look sexy! I almost want to eat you all up myself.” Rebbecca looked down and realised she was wearing the special outfit Jacob had gotten her.
She was so engrossed in her fantasy that she did not even realise as she struggled into the tight outfit, the red lace not hiding the blue teddy that covered her midriff. The side of it was even almost peaking through the crotch of her short short jeans. You could even go so far as to say that her blue teddy lingerie was covering more skin than the short shorts and off the shoulder crop top.
Laura held her mouth open a little as she looked at Rebecca before she licked her lips and swallowed. It was such an odd combination, the full undergarments and clothes; yet it still somehow worked to make her look more provocative.
Rebecca felt her face burning and yet she didn’t hide away, still fresh from her fantasy and wanting to show off, imagining that this was for Jacob. She looked to Laura who could only shake her head and admit, “Your boyfriend seems to really know how to make you beautiful. You are so ready to wear what he recommends that it almost makes me jealous that you never really liked what we recommended.”
Rebecca held her hands in front of her stomach and giggled shyly, unsure what to say in response. Luckily for her, Brooke jumped in with some teasing as she hopped behind Rebecca.
She pressed her hips to Rebecca’s ass and held her hands to her hips as she peaked over her shoulder to Laura, “What? Is seeing just how tasty this sweet little piece of candy can be making you have some dirty thoughts?I almost feel jealous, but lucky for me Rebecca isn’t gay, right?” Her final statement was obviously in the form of a question, all of her teasing making Rebecca blush even further.
Laura blushed and looked furiously at Brooke who just laughed and pulled away, slapping Rebecca’s ass. The strike sent a shock coursing through her body and right into her pussy, “Don’t get angry with me. Rebecca’s new boyfriend is making her a hot piece of ass. It’s not my fault that you are fantasizing about her. Maybe if we ask her boyfriend nicely, he’ll let us have some fun with her as well.”
Brooke winked and Rebbecca tossed her head around to look at her as she imagined it. Not Jacob’s tongue licking up at her pussy, but someone else’s. As if knowing her inner thoughts, Brooke smirked and waved her tongue around as she hopped her eyebrows up and down. Rebecca quickly looked away, unable to purge the thought of Brooke’s tongue waving back and forth on her pussy.
Laura on the other hand, had her face fall, thinking of how wrong it was. Brooke had already fucked Rebecca’s brother, but now she wanted the sister as well? Rebecca was truly very attractive now, but still; it was crossing another line Laura was not really comfortable with.
Brooke kept teasing and slowly pushed the conversation to Rebecca trying on her lingerie as she blushed visibly. In order to do that, she would have to strip completely naked this time.
“Why don’t you show us what else your boyfriend got so that you could entice him.” Brooke did not let that opportunity to tease pass by as she sat back down and glanced at Laura, “That is unless the sight of her naked body will be enough to send you over the edge? Do you think you’ll be able to hold yourself back for your girlfriend though?”
Rebecca looked to Laura as well, awaiting her answer as unbeknownst to the two of them, Brooke was manipulating the both of them to have fun. It never even crossed Rebecca’s mind to refuse, although it would be impossible to tell how much of that is because of Jacob and how much of that would be because of Brooke.
Laura somewhat knew what Brooke was doing, but she could not hold herself back and still jumped right into the trap as she growled out, “Of course I’m not going to do anything, Brooke. I’m not a damn sex freak! Unlike you!”
Brooke smirked at that and Rebecca blushed a bit more, taking that as her cue to show off. In her warped mind she just repeated, ‘I represent Jacob, and I have to show off as his girlfriend. I am beautiful, because I am after all, his.’
Brooke blatantly watched as Rebecca stripped, giving them both a look at her completely naked body. Her cute little nipples standing at attention on her large breasts and her hairless mound open to see. Laura on the other hand was a little more subtle, looking away somewhat, yet constantly glancing back.
She was so off balance that she did not even have the clarity of mind to chastise Brooke for her blatantly perverse gaze as Rebecca stripped and showed off her new lingerie. After a few different pieces, all seemingly better than the last, Brooke finally glanced at Laura to see her reaction.
Holding her gaze on her girlfriend for a second as Rebecca changed once more, she subtly picked up on her attraction to their friend and she narrowed her eyes slightly while thinking, ‘Hey, Rebecca might be hot, but I think I am going to have to show you again why you instead love me when we get home.’
Rebecca continued with each piece only finally pausing before that final outfit that Jacob had made her finish. Laura noticed her hesitating and asked curiously, only able to hold back her own desire and arousal because of the situation, “What’s wrong Rebecca?”
With only a glance back at her friends, Rebecca bit her lips and brought her eyes back to the corset, g-string, and fishnets before mumbling something incomprehensible. She realised how quiet she was and paused, clearing her throat and saying, “Um, this last one is-well um- J-my boyfriend said that this one really showed I was his.”
Brooke smirked and egged her on while Laura sighed. After a few moments of constant pestering, Rebecca finally started putting it on. The corset made her look even slimmer and her breasts even perkier while the g-string made her pussy puffier and more inviting. The fishnets pulled it all together and made the whole outfit scream, ‘I am sexy and I know it.’
Laura starred as if in shock that her shy friend could wear this while Brooke hooted, “Fucking hell! You look sexy as fuck Rebecca! I almost want to take you right now and make you just forget your boyfriend!”
Rebecca blushed and felt her body heating up as pride welled inside her, “You know you can’t though, right? He said that if someone saw this they would know-know I was a slut, but just for him.”
Brooke nodded her head with a giggle, thinking of how much Jacob had twisted this innocent girl while Laura was too stunned to address that confession, “Yea, we’d need to chat with your boyfriend before I eat you all up.” Glancing at Laura who was obviously aroused and unable to speak, Brooke smirked, “You still went out and got shoes though right? Why don’t you stay like that as you put them on, just to remind us of how you are his; Otherwise we might just pounce on you.”
Rebecca didn’t question the backwards logic, taking it as fact since it was so similar to the lies and manipulations that Jacob had been feeding her. So, dressed in her sluttiest lingerie, Rebecca went about showing off her new high heels, her breasts wide on display and pussy arguably on display as well.
Laura slowly broke out of her stunned silence and cursed with wide eyes as she saw Rebecca put on the first pair of three inch heels, “What the hell? Did he seriously get those for you? I’ve never even seen you wear high heels before, how does he expect you to walk in those? Didn’t he get any smaller ones for you to build up to that at least?”
Rebbecca bit her lips and shook her head, feeling attacked even though it was directed at Jacob and not her. Brooke quickly mediated, not wanting Rebecca to have any doubts and turn away from her big brother; afterall, the possibility of what could happen was too enticing.
“Rebecca can handle it, right? She just has to slowly get used to it. I mean, he picked out her outfit today and didn’t force her to wear heels.” Rebecca relaxed a little at her words and nodded.
“Yea, he picked out my sandals today. He knows what I can endure and he only pushes me to do things I can handle.” Laura looked alternatingly between the two of them and finally just sighed. There was no fighting when both of them were defending this mystery boyfriend.
Rebecca continued showing off each pair on her lithe legs, sitting on her bed the entire time and not even trying to stand up in them. When she finally pulled out the final gladiator styled eight inch stiletto boots, Laura actually scowled in disbelief, “He thinks you can handle this?”
Rebecca felt defensive and actually got a little agitated for Jacob, defending him even though he wasn’t here, “No, he said as much as well! He just wants me to wear these while sitting down so that I can see what I am working towards.” Laura and Brooke both looked shocked at Rebecca’s bout of righteous indignation and Laura found herself speechless.
Finally, she could only lower her head and eke out a small apology. She felt as if she was wrong at every turn today and just could not catch a break. Brooke on the other hand laughed and slapped her own thigh, “God damn Rebecca, you are so damn loyal! It’s making me jealous.”
Rebecca blushed and felt bashful as she looked at Brooke. It felt like it was her duty to defend him since she was his girlfriend and represented him. She just could not realise how twisted she was because of Jacob and just simply asked, “Can I change back now?”
Brooke cocked her brows at the question and nodded, finally cursing Jacob, ‘God damn it Jacob. You are so fucking lucky to have opened her up first or else if I was able to have a girl like this, I would never let her go.’
Just like that Rebecca changed back into the outfit Jacob had picked for her this morning, foregoing changing into something more comfortable. She even went on to leave the massive gladiator style heels back on, as if to make a statement. With Laura so defeated, Brooke was able to steer the conversation, not missing any chances to tease either of the other girls.
...
Sometime later, the front door of the house opened and in came Mary, Jacob and Rebecca’s mother. She looked like a bombshell in her makeup and outfit, her white blouse haphazardly buttoned up and giving a peak to the back lace bra holding in her bountiful cleavage. Her black suit jacket hung loosely and her tight black pencil skirt and her stockings were the only thing that seemed to be put on properly.
Uncharacteristically though, her face was stuck in a mask of depression. She stepped out of her stiletto heels and went to the liquor cabinet, grabbing a bottle of whiskey. She quickly poured herself a glass and paused as she heard the laughter of girls coming from upstairs. Weakly sighing, she quickly downed the glass and made her way into her own room downstairs, the glass and bottle in her hands as she felt the sting of the alcohol as it went down.
She was not going to stop with only one glass today, and she did not want to put on a drunken show for what she had assumed was Jacob’s female company. She couldn’t really be blamed since Rebecca just didn’t really have any friends she would invite over and Jacob had a history.
She closed her bedroom door and poured herself another glass before looking in the mirror. With a despondent chuckle she thought of her work, ‘Those sons of bitches just love to think that they are real men. One glass like this and they would think they had me in the palm of their hands. God, why can’t things just stay that easy?’
Mary downed her glass again, feeling the heat spreading through her body. With a stuttering inhale, she sighed, managing to hold back her tears as she completely opened her blouse, exposing her breasts clad in lacy black lingerie.
She kept drinking, downing each glass of whiskey as if it was water as she lamented her fate. It wasn’t the first time that she had gotten that offer, though usually it was a promise and she was able to always twist it into something she could use. She had never gotten that condition though.
With another glass downed, she berated herself for reacting so strongly to it. Looking into the mirror, she spoke to herself, “You idiot! It happened 18 years ago and you’ve been fine until now, why are you being so stupid!” Mary couldn’t help it anymore and tears started to form at the base of her eyes.
She let a few tears fall before she shakily poured herself another glass which she instantly chugged down. Her body was heating up from her frenzied state already and her thinking was getting more and more erratic. She started fighting with her skirt zipper, just barely managing to unzip and slip it off before she almost broke it.
The frustration however seemed to break her as she began sobbing softly, unable to move from her dresser and feeling so weak. She had no strength and could barely muster to keep pouring herself some whiskey and chugging it. Her mind was in chaos, unable to catch herself as she spiralled from finally coming to the sanctuary of her home. Time kept flowing, the bell-like laughter of the girls upstairs unable to even enter her mind now.
With her black lace panties and overflow of pubic hair exposed, she suddenly clenched her delicate hand on her glass and took another swig before she slammed it glass down on her dresser, making a loud bang echo in her room, “You asshole! Fucking asshole!” She said nothing more, merely cursing in her mind, the man who was her client today.
Jacob had long finished his little shopping spree and was working; suddenly he heard the thump of Mary’s glass on her dresser and her loud cursing, his room sitting right above hers and sharing an air vent. He didn’t know what it was and out of curiosity, got up and went downstairs.
Seeing his mother’s purse on the island, he cocked his brow and checked his phone, wondering why she was home so early and wondering if he had missed her message. With no messages on his phone, his confusion deepened and he stalked towards Mary’s room.
He got to the door just in time to hear her curse softly once more through choked sobs, “You stupid moron.” Unbeknownst to Jacob, she was once more cursing herself, confused as to why this little thing was breaking her up inside.
With soft movements, Jacob slowly opened the door while Mary whipped her head in his direction. Jacob froze for as second as he saw her; her blouse open with only her lacy underwear and stockings on her body.
Her makeup was waterproof, leaving her face full and inviting in a seductive manner, even with the tears pouring from her eyes. She tried wiping away her tears with her fingers but didn’t even try to cover up, feeling comfortable enough around her son to not worry about being in her underwear, not realizing the changes he had gone through.
In the past, he may have had an attraction to her beauty, but he would have just praised her in his mind and not entertained any taboo thoughts. Now however, all he could see was the alluring body of a mature woman from a different era. As his eyes glanced down, he thought, ‘She even has the bush to prove it.’
His cock began to rise in his shorts as she tried to stop crying futilely, tears still leaking as she sniffled, trying to soften her voice as best she could, “W-what’s going on honey?” Jacob brought his eyes up to hers and gave a wry smile.
“I was going to ask you the same thing. What’s up? Why are you home so early crying in your room-” He glanced at the bottle of whiskey and full glass, “-and drinking so early in the day?” Mary looked at the glass of whiskey and held herself back for a second before just giving in and taking another swig, the burning alcohol only driving her desire to forget stronger.
She needed to talk, but she couldn’t confide in her son, especially since it involved her job. She had been lying for so long, she was not about to spill the beans just because of her little meltdown. With a whining sigh, she stared at the ceiling, “I’ve- I’ve just had a very bad day honey.”
“Oh yea, why don’t you tell me about it. I’m sure it’ll help you feel better.” Jacob quickly adjusted his shorts to hide his semi-erect member and stepped into her room completely.
Giving a quick glance at her empty glass, Mary sighed and took a few chugs straight from the bottle, causing Jacob’s eyebrow to rise. Slamming it down onto her dresser, she closed it and left it there before falling into her bed with her limbs spread wide.
It unknowingly gave Jason the perfect view to see her lace clad pussy and breasts. He licked his dry lips, seeing how deep the blush of her face had gotten as she began moving. She shielded her eyes with her hands and sniffed, “Someone wanted something I could not give them, no matter how hard I tried!”
With a hint of intrigue crawling through his haze of arousal, he sat down on the bed beside her; his hand gently went to her thigh, sliding up her supple flesh.
Mary showed no reaction, already used to such advances and too intoxicated to think about the fact that it was her son doing it, not a client. Carefully watching her reaction, Jacob slid his hand up her body to her bare stomach and sighed, “Come now, you can tell me about it, we’re family, right?”
That sentence brought back some of her rationality and she sat up, realising it was probably a little wrong to be acting this way in front of her son. However once she sat up, Jacob immediately grabbed her blouse and started pulling it off her body, “Let’s get you out of this so you can relax and tell me everything.”
Mary felt like it was wrong, but she didn’t stop him, just taking it as a sign that he was worried and caring for her. She just let him strip her of her blouse and whined, her mind stuck and unable to share her suffering, “I, I can’t tell you. It’s to do with grown up things.”
With a chortle, Jacob shook his head, “I am a grown up mom. I’m even running my own business. You can’t really get more grown up than that.” Mary breathed out chaotically as the alcohol burned up her body and she looked to Jacob, seeing the muscles of his arms exposed at the sleeve of his t-shirt; she glance up to his face and realised the difference in size and quickly changed the subject as she wished to purge the disgusting thought that just flashed in her mind.
“Shouldn’t you get back to your lady friends instead of spending time with your mom?” She tried to smile encouragingly, but the grimace on her face made the effort moot. Jacob just clicked his tongue and chuckled.
“Those girls are here for Rebecca, at least for now. They’re her friends.” Jacob knew that his mother was not going to open up so with a light sigh, he placed his hand on her shoulder, just beside her bra strap, “It doesn’t matter. But mom, if you won’t share your problems with me, then you should really get a boyfriend and share them with him.”
Mary shook at those words and in a few seconds more tears were pouring from her eyes as she cried out, “That won’t change anything.” She didn’t think she could ever be in a proper relationship considering her job and inability to give a stable man what he wanted.
Jacob wrapped his arm around her shoulder and pulled her into a slight hug and rubbed her bare shoulder. He opened his mouth to speak, whether those words were meant to heal or harm, even he wouldn’t know, “Come on, I’m the man of the house and I am here for you. I can help you with whatever problem you have.”
Feeling overwhelmed with her own thoughts and in a stupor from all the whiskey, she finally just cried out in frustration at his words, “You can’t help me have kids either way!” With that cry, she turned into Jacob and started bawling in his chest, soaking his t-shirt in tears. She was completely unaware of the misunderstanding that could arise from Jacob not having the entire story.
Jacob sat in silence for a minute, trying to understand the implications of her words as his cock grew to attention. He began imaging it, mounting his mother and claiming the woman that raised him; claiming the hole that birthed him and filling it with his own seed for her to give birth to his child instead. He swallowed, biting his lips to hold back his smile as he thought about the fact that now, every taboo he encountered was something that only seemed to excite him if he thought about breaking it.
After some time just letting Mary cry into his shirt, he tried to think about how that could have come up in her work as a business consultant. With a sneaking suspicion, he began to comfort her, patting her back as he soothed with a caring face, “Shh, it’s okay. It’s okay, you can cry all you need. I’m here for you.”
They stayed like that for a while, Mary just crying while clad in nothing but her lingerie with Jacob rubbing her bare back with his hands. Finally, her sobbs began to sputter out as she calmed down, her energy becoming completely drained.
With a comforting pat on her back, Jacob pushed her away lightly before forcing her to look up at his face with his hand, “Feel better?” Mary weakly nodded, feeling like such a failure of a mother at that moment. She was supposed to be her children’s shoulder to cry on, not the other way around; however, then again, she couldn’t really bring out the energy to care. She was completely drained from the crying session that the alcohol was having an even stronger impact on her, making her feel so hazy.
“Good, then when you are ready to explain what is going on, I’ll be right here waiting for you. Until then, let’s just get you relaxed.” Jacob’s voice was almost hypnotic as he dragged his fingers gently up along Mary’s spine, eliciting a moan as she shivered.
With one last glance at the beautifully designed body of his mother, Jacob leaned in and gave Mary a tame, but still passionate kiss on the lips. Mary felt it was odd, but didn’t protest since he didn’t use his tongue. After pulling back as if nothing was out of the ordinary, he gently laid his mother onto her bed.
With practised fingers he reached behind Mary’s back and unclasped her bra, letting her massive, 34F breasts fall out and surprisingly stand up with a vigour uncommon for her age. It was obvious that she had had some work done, but that was not the main concern as she suddenly sobered up considerably and covered her nipples with her arm, slurring out, “What are you doing?”
With a smirk, Jacob patted Mary’s head, the hard-on brought exacerbated by the sight of those seemingly perfect breasts hidden in his shorts, “You need to relax. There’s no better way to do that than to just let everything go and be naked.” Without any more explanation, putting just a bit of force into her shoulders, layed her onto her back and scooted off the bed, down to her feet.
With a confident smirk, he grasped her stockings and with deft fingers, slowly rolled them up her legs. Mary gulped wondering if she was too drunk and picking up on a sensuality that was not really there. For a moment, she felt as if she was back at work, being just the little plaything of a powerful man; this time just without her usual acting.
With a little shake of her head as if to clear the drunken haze, Mary banished the thought only to yip lightly and close her legs together as Jacob grasped the strap of her panties. Not wanting to show that she was the weird one for finding this sexual, she felt her energy fading as she just said awkwardly, “That’s enough honey, I’ll do the rest myself. It’s alright.”
Jacob was already gotten into a rhythm however, the rhythm that Rebecca had helped him unleash. WIth a subtle look up to his mother’s face, he simply said, “Open your legs.” There was no awkwardness, no doubt in his words. It was as if those words were not a command, but rather just a comment; not on what she should do, but on what she would do.
Mary physically felt those words hit her with a shiver and she gulped, her face already pink from alcohol, flushing even slightly more. With a blank mind, she slowly spread her legs as her whole body relaxed as if made of jelly. Without a moment’s hesitation, her son sensually pulled her black lace panties down her legs as he stood up and raised them in the air.
Stunned and without the ability to move, her ankles fell onto Jacob’s shoulders as her panties slid past her feet. Her legs were splayed giving him the perfect view of her completely natural pussy with bushy hair and all. Jacob didn’t bother hiding it as his eyes blatantly stared at his mother’s pussy, merely giving a small hum which did not give clarity to his thoughts. Mary was too stunned to even move this time, eyes drunken eyes wide as she stared at her son Jacob’s face.
Suddenly grabbing her ankles, he stepped back and tossed her legs together, giving just a bit of shielding to her pussy and making Mary’s mind race, ‘God, I’m such a whore. I just laid here with my legs spread out for my son, showing him my pussy. He was even the one to finally close my legs. I can’t be bringing home my habits from work, what the hell am I thinking?’ Jacob climbed onto the bed and got hold of Mary’s wrists before gently pulling her up onto the middle of the bed. She didn’t resist, even as it left her breasts completely exposed to Jacob’s hungry eyes.
Letting his eyes wander all over her body for a moment, he winked down at her which caused her to blink her eyes and wonder if she just imagined that. Jacob didn’t do anything more provocative and just hopped off the bed before covering her body with a blanket and smiling, “There you go. Now relax and have a nice nap. I’ll leave some leftover dinner for you in the fridge if you wake up later.”
“Oh, um, yea, thanks honey.” Mary stared at her son, feeling as if the world was spinning and not knowing if that was because of the alcohol, or the fact that she just thanked her son for stripping her naked and spreading her legs.
Jacob told her it was no problem as he turned off the lights and closed the door behind him, leaving Mary in darkness alone with her thoughts. After a few moments of silence, it was broken by the muffled laughter of girls upstairs. Mary merely whispered to herself, almost incredulously, “Am I really such a dirty whore? My son was just helping me out and I went and dirtied it. How could I? Yea, how could I?”
Mary immediately blamed herself, not wanting to even consider that her son saw her being such a slut. She was so lost in her drunken and overstimulated mind, that she didn’t put two and two together that it really was Jacob making everything sexual, not her. She couldn’t help but feel as if was her inadvertently bringing her habits from work back home that it put her into a stimulated mood.
As if her self blame was not bad enough, she still felt bad because of the experience today and was distraught that she could not have kids anymore. It was just her nature to take it upon herself, even when it was not her fault. That was one of the reasons her business consulting job warped into something so impure.
Even with that though, she thought of what Jacob had just done for her and made excuses for his actions, taking it as only him showing her his care and love. She tried distracting herself with the joy that she at least had two wonderful children and thought back to her late husband; the man who gave her that priceless gift.
With a depressed sigh and no one else around, her fingers slowly slid down her body towards her cunt. She closed her eyes and imagined him in her mind; his handsome face covered in a thick, manly beard and his muscles bulging out of his shirt. She gave a slight moan as she brought up the blanket to muffle the sounds.
With all the stimulation of her fingers and mind working together to concoct a superb fantasy, she imagined his muscled body pinning her down and showing her a tenderness as he gave her a wonderful pleasure; not just fucking her to date his list and desire for power, but the act of truly making love. Mary saw his caring face, arching her back slightly as her fingers rammed inside her.