Mother In-law - Security Guard - Cover

Mother In-law - Security Guard

by Jim Priest

Copyright© 2025 by Jim Priest

Fantasy Sex Story: Mother In-Law & night security guard destroys several intruders

Caution: This Fantasy Sex Story contains strong sexual content, including Ma/Fa   Coercion   Consensual   InLaws   FemaleDom   .

The following story contains descriptions of sex and violence. If this offends you or if you are under the legal age of consent in your country do not read on. Any likeness to anyone dead or alive is purely coincidental.

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Two figures in black fatigues carrying heavy backpacks and wearing night vision goggles emerge silently from the dark desolate wood under the cover of darkness. Moving stealthily, they gain the cover of an old WWII pillbox. Once the simple squat concrete fort had been used to keep watch for German Commandos. Tonight the men in black use the abandoned relic to examine the facility it was once designed to protect.

Time was of the essence. The rest of the squad were engaged in a firefight pinning down a U.S. Black Ops team a few miles to the North on Dartmoor. Already the Devonshire Police had been instructed to close the surrounding area and keep away the Public under the cover of a ‘training exercise’. There had been reports that the USAF had taken off from Mildenhall, which meant paratroopers could be here soon unless the RAF could intercept them. The stakes were high; this was deteriorating into an ‘International Incident’. The U.S. President had given the British Prime Minister the cold shoulder over the activities on British soil but neither knew the real reason for this conflict.

Operating under radio-blackout, Mark could recall The Evil One’s screech ringing in his ears. “For God’s sake, get in there and destroy it before the Yanks get there. Do whatever it takes”. Although they had memorized the layout from maps and aerial photos, seeing the place from the ground gave a completely different perspective. Consisting of a seemingly haphazard arrangement of simple low brick buildings with asbestos corrugated roofs, the facility would be familiar to anyone who had seen a British forces base dating back to WWII. Long abandoned by the military since the 1970’s, a scrap merchant now used the site; the weeds and the elements had taken their toll. However what they want is beyond human sight.

There is an open expanse of ground between the pillbox and the nearest buildings. With a clear night sky and a full moon, any attempt to cross it was likely to be seen by any observer.

“Security guard at 4’o clock” Brad’s voice caught Mark’s attention. “Female. Squat and fat. Civie. Take her out. No witnesses” Brad told him, unnecessarily. The guard was heading away from their location. Stealthily they crossed the open ground to the closest building then split up. Keeping to the shadows of the derelict huts, Mark quietly followed the direction that the guard had taken. Seeing the beam of her flashlight lighting up an area just around the corner of a building ahead, he moved more cautiously. Peering carefully around the corner, he spotted her standing a few yards away faintly illuminated by the moonlight looking around with her torch.

With his night vision, he agrees with Brad’s assessment. Wearing a dark jacket and knee length skirt, the woman stood around 5’1”, and cut a bulky figure. From the back, a short thick neck merged into broad drooping shoulders from which her uniform jacket hung in straight lines down a shapeless wide back with very thick arms. Below the jacket, a knee-length skirt hung straight from very broad hips suggesting equally thick legs with short very large calves at the bottom and low-heeled shoes. As she turned, he caught a glimpse of a long broad chubby face with ruddy complexion, a double chin and a sort of matronly look. Her nose was large and thick, her cheekbones prominent, her mouth medium wide. Short almost shoulder length dark curly hair exposed a high forehead. Late fifties he guessed. If she was working a night shift, she couldn’t have young kids at home. He would be doing the National Health Service a favour by taking out this fatty.

The woman moves on with Mark trailing. Although she appears harmless, he has been trained to be cautious and not take things for granted. The way Vanessa should have in Paris [JIMP#14]. He pushes the extraneous thought to the back of his mind. He watches as she enters a more intact looking hut with light blazing out of the windows. Removing his night vision and backpack, Mark silently moved to the door and looked in. Obviously the guardroom; sparsely furnished with a few desks and chairs. With a note of unease, he spots a bank of black and white monitors lining one wall in front of a desk. CCTV They could have been caught on tape. They will need to be destroyed. The fat woman is standing in front of a large window at the side of the hut overlooking the front gate to the site. She had removed her jacket to reveal a crisp white blouse that stretched awkwardly over her extremely wide large figure. Large pendulous breasts stretched the blouse, but that didn’t appeal to Mark.

Repulsed, he sees the folds of her double chin and her greying hair. Her hips are very wide and her large backside stretches the top of her skirt tight. He also notes how the rest of the skirt is tight across the back of her thighs. Below this are wide thick powerful diamond shaped calves covered in sheer black nylon tapering down to her ankles and low-heeled shoes. She might have developed those monsters from carrying all of that weight around. However the big solid slabs of muscle looked weight trained and that aroused suspicion.

The experienced soldier makes a snap decision. Take her by surprise and slit her throat. Moving silently and swiftly he sneaks up behind his prey. Suddenly the squat woman turned driving a large fist hard against his gut. Mark was well trained and instinctively tensed his six-pack abs to take the blow. “Nnhhgarrh” his body was propelled backwards across the room by a shocking force, his abs failing to fully protect him. Mark knew that he could take a punch in the gut without batting an eyelid, with one exception. That was another mature woman, the fearsome Dragon who could smash through his muscled defences with ease leaving him a gasping whimpering wreck. Now another mature woman, a civilian, had almost done the same.


Paula stared at her reflection in the window. The bulky figure reminded her that it was only a few years ago that she had been so obese that her doctor refused to treat her. She had tried all sorts of faddy diets before only to lose a few pounds then pile it back on again soon after.

Getting up the courage to check out the local branch of a popular gym chain, she ended up on the opposite side of the street watching the people going in and out. All of them were young, not one anywhere near her age and none were seriously overweight. “If you’re after a gym, I wouldn’t bother with that place. It’s overpriced and people only go there because they think it’s the fashionable place to be seen” a posh woman’s voice spoke from behind her. That was when she met Lady Helen Windthorpe.

The tall, beautiful elegantly dressed woman made a striking impression dressed in a pale green Italian designer dress suit with her brown hair tied back in a tight bob and wearing designer sunglasses. Sitting in a red open topped Ferrari in an adjacent parking bay, she offered to take Paula to a better gym that would help her lose weight. “It’s small and private for a few select women only. I encourage all my female staff to use its facilities for free. Hop in and let me show you”. Thrilled by the prospect of a ride in an expensive fast car, Paula agreed.

During a hair-raising drive at breakneck speed down narrow roads, Paula was asked whether she was looking for work, which she was. “Were you ever in the armed forces” Lady Helen then asked. “I used to be in the RAF for a while. A ground support role” she had answered. “So you weren’t combat trained?” the elegant woman asked loudly over the air rushing over the windscreen. “Actually I took up Jujitsu. I was quite good at it” she replied. “Excellent”. The exhilarating drive halted at an ex-army base now home to a scrap dealer.

The security guard at the gate let her drive in. “This is one of my ventures. There’s a lot of money in scrap metal. Men run this on my behalf but I like to have women I can trust to keep an eye on them and guard the place” Helen told her. “I could really do with a night security guard. You would be perfect after a bit of training”. Paula was flattered, she could do with the money but she couldn’t see herself as a security guard and said so. “Nonsense. Nothing a bit of training won’t put right”. The gym was located in a small low hut away from the entrance.

She wasn’t convinced until she was introduced to Cynthia who ran the gym. She was about the same age with a similar bulky looking build although taller. Then she stripped off. Paula had seen pictures of women bodybuilders and couldn’t understand why any woman would want to look like that, but Cynthia’s body was amazing with powerful arms and legs, a hard stomach but undeniably feminine with a dramatic curvy hourglass figure and large firm breasts. “Do you want me to help you build a body like this?” Cynthia asked her big breasts swelling as she flexed two huge solid peaked biceps. “Oh yes please” Paula replied without hesitation. She loved the idea of being strong and sexy like her with no flabby bits. “Excellent. Cynthia can also arrange for you to take a refresher in combat training then you can become my night security guard” Lady Helen had said.

Paula recalled with pride how quickly her large body responded to the weight training and the nutritional diet given to her. Although she lost weight, most of the fat turned to solid dense muscle, which she was immensely pleased with. Her large wobbly overhanging stomach tightened and got flatter and harder. The thick fat arms got harder and stronger. She was stunned at how her grotesquely fat legs transformed into awesome pillars of muscles that had many of the other women green with jealousy. Her jujitsu skills quickly came back, she particularly enjoyed throwing the young women around the mat so much that the instructor got her to take up karate to give the poor girls a break and to improve her flexibility.

She enjoyed working out at the quiet little gym so much that she spent much of her day there. There were other women who used the gym, of all ages from all walks of life. She was surprised to see the local Militant Wing of The Salvation Army work out there. Paula had once been in the Army but had never heard of them. Watching them made her enlist straight away.

Some of the women, including Cynthia wore Indian goddess necklaces. When she asked Cynthia about this, she was told that they belonged to a secret sisterhood of strength. “Not just physical strength or strength in combat skills. Sexual strength as well. The power to completely dominate a man physically, in combat and sexually as well” Cynthia said with a saucy smile. Paula always thought herself good in bed. “I’ve never had any complaints in that department” she said. Cynthia took her to visit an elderly Indian woman. In stunned disbelief she watched as a skinny old wrinkled white haired hag took a young man inside her and kept him moaning non-stop with pleasure for over an hour. “Very strong Yoni. Tantric sex keep lover faithful and satisfied” she said. In broken English the woman described the techniques she was applying. Methods that sounded impossible but the look on the boys face convinced Paula that she was telling the truth. In the end the boy passed out from sheer exhaustion. “You like? I’m 6th Dan black belt in marital arts”. “Please teach me” Paula said instantly. “Only for sisterhood” the old woman told her. “You watch”. The old crow took a 10p piece and presented it to her vagina where it was gripped and pulled inside. “Watch” she said pointing to the wall. The woman seemed to relax and Paula was astonished to see a streak of silver shoot across the room towards the wall and a thud as something hit it. Paula was staggered to find the coin buried so deep within the plasterwork that it’s top edge could not be gripped. “Break penis like that” the old woman laughed. Paula was eager to begin her rites of passage into the mysteries of the Sisterhood!.

Then came the interest about her son in-law Jim Priest who had become a private detective. Cynthia had returned after some time away and asked Paula to use her relationship to keep a close watch. She also mentioned how much Jim appreciated a powerful woman like her [JIMP#8] although Paula didn’t understand that comment until she confronted Jim in the basement of Bristlingdown Manor. She remembered how lustful Jim became when she showed off her powerfully built body and how turned on he became when she physically dominated him [JIMP#13]. His desire was contagious and she ended up demonstrating her strong love muscles on his ardour (she was only a white belt in that department). Afterwards she abandoned the mission, deeply ashamed at causing Jim to be unfaithful to her own daughter. However she couldn’t stop dreaming about how he had worshipped her and fantasizng about other things they didn’t do. Although most men were put off assuming she was still obese, she had no trouble finding admirers. However, once she removed her clothes most were scared witless by her mighty physique, and those that weren’t didn’t return after sampling her lovemaking skills.

Temptation became too much when she recently stayed with her daughter and Jim. They were alone in the house; Jim was working from home in the box room at the front. She was in the back spare room, knowing that it was wrong but she was a highly sexed woman and kept thinking about the passion she had previously aroused in her son in-law.

Standing by the bed in full view of the open doorway, she looked towards the window wearing nothing but her bra and briefs. Jim was in the bathroom and she knew that he would see her as he left. Hearing his footsteps, she began some calve raises letting him have full view of her large thickly muscled double diamonds. Pleased to hear his breathing get heavier, she said, “Come in dear and talk to your mother in-law. It’s ok, I’m sure you’re not bothered about an old woman in her undies”.

Still he hesitated so she gave him both barrels. Lifting both arms she brought them down into a mighty double-biceps knowing he would get full sight of those monsters and her broad back. “Oh my god” he moaned softly. She heard him come up behind her, then felt his hands explore her mighty peaks. “They’re amazing” he gushed in awe “They’re much more defined and I’m sure they’re bigger”. She felt his hands run across her back. “Wow absolutely amazing back. It’s like a contour map of some very rugged country. Incredible”. Standing close behind her, his lips began gently kissing her neck as his hands roamed over her upper body.

Reaching around, Jim’s hands fondled the soft pillows of her large breasts through her stiff bra. “Oh god you really turn me on” he mumbles between kisses. “You wouldn’t know what to do with them” Paula said. Feeling his way down to her stomach, she felt his fingers run over the ridges and grooves. “Oh my word!” he gasped, “You’ve now got a six pack and so deep cut”. “Careful you could break your hand on that, love. I’m built like an outhouse but with added comfort” she cupped and lifted her breasts for emphasis.

Jim’s hands disappeared behind her back and for a moment Paula didn’t know what he was doing until she heard the distinctive sound of a trouser fly being unzipped. She gasped, as she felt something warm and hard slip down the back of her panties between her buttocks. “That’s a nice surprise for your mother in-law, Jim” she said excited with the effect she was having on him. Unclasping her bra, Jim’s hands re-appeared cupping and fondling her breasts as they spilled out unrestrained. “They’re so big” he moaned. He was breathing more heavily, kissing her neck with more passion and dry humping her. Paula flexed her glutes several times around his erection. “Ohhh Paula you make me so hard” he cried passionately.

Removing the stiff manhood from her knickers, Paula turned around to face her son in-law. Looking up at him, she lifted her arms and flexed her mountainous peaks. Her powerful pectorals raised her huge breasts forming vast double mounds with a deep cleavage that no heterosexual man could resist. “Phoar!” Jim moaned. “Never mind my tits, what about this pair of whoppers”. “They’re incredible” Jim exclaimed bending forward to kiss and caress her mighty guns.

Bending at the knees, she slipped one arm between his legs then effortlessly lifted him. Holding Jim horizontally in front of her, face up, she began to curl him. “I used you as my human barbell before. I’ll do it again. That is my right as your mother in-law” she told him as she curled his body towards her then lowered him. “This mother in-law can do whatever she likes to you because she is strong and you are weak” she curled him easily without any visible sign of exertion. Jim, however, was showing a very visible sign of appreciation. “I’m physically dominating you, son in-law, and there is nothing you can do to stop it” she said, cherishing the reaction on his face. “I will sexually dominate you too”. At that she curled him towards her bringing his crotch to her face. His stiff rod entered her waiting mouth, which closed around it. As she curled him away from her, his dick left her mouth in a long suck, popping from her lips with a wet pop. “Ohh” he moaned. Paula was enjoying this. She continued curling her son in-law sucking his dick each time at the top of each curl. “Ohh ohh”. She was driving him crazy. “Ohh please suck me off” he begged. Plop “I give the orders around here Son in-Law” Plop!. “Ohhhh Paula ohhh”. He was getting harder by the second. Her power to drive her son in-law wild with desire and keep him helpless from doing anything about it was making her very horny.

At the top of the next curl, she altered her hand position and pressed him high over her head. Looking up at him as she held his body overhead on steady arms, she asked. “Who’s the best mother in-law in the world?” “You are, you are”. “Who’s in total control of your body?”. “You are” he replied. Lowering him slowly towards her head, she opened her mouth and swallowed his descending erection then pressed him up again, his dick moving out from her pursed lips. “Ohhhh”. She pressed him several more times sucking on him each time. “Please Paula please I want you” he begged. Paula pressed him and held him aloft. “I could keep this up all morning” she told him then looked at his throbbing dick. “That’s more than you can do. You look like you’re going to blow any second”. With that she slammed him onto his back on the bed.

Removing her knickers, Paula straddled Jim a few inches above his chest. Looking down at him, she flexed a most muscular, pleased to see a mixture of fear and lust as he eyed the bulky muscle, striations and cuts in her mighty arms and chest. “Think you can handle me in the bedroom?” she challenged. “Oh yes please” he gasped.

Paula turned so that she was facing his feet and his erection. Ignoring his grunts as she lay on top of him, Paula trapped Jim’s head between her huge calves. Wrapping her arms around his hips, she then rolled over so that he was now on top. With his head still between her calves, she reached down and slipped his erection inside her. “Ohhh” he moaned. “Don’t you dare cum so soon” she warned. She heard him gasp as she contracted her powerful love muscles hard around his shaft preventing his ejaculation. Certain that danger had passed, Paula started to pulse her innermost rings of muscle around the tip of his cock. “Did you know that there are several rings of muscles lining a woman’s love box? I can manipulate these muscles individually, in tandem like this”. “Ohhhh” he moaned as his dick was gripped and released in a series of squeezes. “Or in sequence, like this”. “Ohhhhh” he moaned as she set up a moving ripple of muscle up and down that pumped his cock. “That’s called the hand of the Gopala-girl who milks the cow. I could milk you dry like this”. “Ohhhh Paula yes please. You’re amazing in bed”. “Even side to side”. “Nnnnh”. She worked him slowly concentrating on the muscle groups of her channel to massage only the tip of Jim’s cock until he was almost ready to climax. Releasing the tip, she massaged only the base to delay the onset of orgasm yet keep him hard. Then she returned to the tip. The power she felt from controlling Jim sexually stimulated her. She worked him over and over, Jim moaning in sustained lust, for as long as she could before exploding in a massive multiple orgasm releasing Jim to join her.

Paula laughed at the memory. Jim didn’t get any work done that morning. She remembered how he tried to leave the room but she put a headlock on him and marched him back to bed. Then she got that coconut...

A sense of danger awoke her from her trance. A man’s face was reflected in the glass approaching her from behind. There were spirits in this place. Brief smells from the past; cooking in the abandoned canteen and cigar smoke in the officer’s mess. Strange short-lived orbs of lights and the feeling of being watched but somehow she knew that this apparition was real and meant her harm.

He was almost upon her when she saw the raised blade. Spinning, her fist flew out straight into the man’s stomach, satisfied to see her attacker fly backwards across the room and land on the floor. His knife skittered away. Her gut punch was more than enough to repel the occasional yob or thief that had tried to gain entry to the camp. After experiencing her large fist buried deep in their gut, they were in no mood to hang around and experience a second punch. As soon as she had hit him, she knew that this man was different. Instead of sinking into a soft belly, her fist had made contact with a rock hard stomach, the force of the punch driving him away. He wasn’t as badly winded as she had expected, other men just crumpled.


Mark got slowly to his feet, breathing slightly heavy but tying not to look fazed. He had never expected the fatty to pack a punch like that. “Stay right where you are mister. I’m calling the Police” she told him, the nerves showing in her voice. Mark laughed, “Go ahead. They won’t do anything. They’ve been told not to interfere”. Standing fully erect now, he gave a nasty smile and added, “say your prayers. I’m from the Elite Death Squad and you’re about to meet your maker”. “Ooh! Is that meant to scare me? Well I’m much scarier. I’m the mother in-law from hell” she replied.

Snarling Mark leapt forward. The big woman’s large fist shot towards his face. Raising his arm, he blocked the punch and winced at the unexpectedly harsh vibrations numbing his arm. Without pausing, Mark hammered his right fist into the woman’s middle. “Ngghh” Mark bit back a cry as his hand collided with hard unyielding flesh. “Mmm” The fatty had hardly made a sound or showed any sign of discomfort. Mark had nearly broken his wrist. Was she wearing a steel reinforced corset to hold in her flab?.

Wham! A large fist came out of nowhere and smashed him in the middle of his face jerking his head back savagely in a spray of blood as his nose broke. Ignoring the damage, Mark returned a punch of his own, catching the side of her jaw. He saw her face hardened as a mighty roundhouse punch whipped his face from one side to the other in a blaze of stars. Wham! Another fist whipped his face back the other way. He just made out another roundhouse punch heading his way and managed to block it, landing a punch to her chin. To his surprise, the woman took the blow. Standing there with her fists clenched and raised, she slugged him again in the side of his jaw with a left followed by a right. Joe returned the blows but she kept standing and slugging. They stood face to face trading punches. A hammer like jab split his lip; he smashed her mouth in return pleased to see a trickle of blood in the corner. A hard right rocked his jaw followed by a left and another hard right causing him to stagger. Dazed, he narrowly managed to duck under another punch that cut through the air above his head. He came up like a coiled spring released and landed an uppercut to her jaw. As the bulky woman staggered backwards in a daze, Mark laughed, “Payback’s a bitch”.

Stepping forward to lay her out, Mark drove his fist straight towards her jaw. Before he realised it was happening the fat woman moved swiftly to one side, grabbed his outstretched arm and hammered a fearsome fist hard into his gut. “Fffoorph”. Turning with his arm over her shoulder, she bent forward. Mark felt himself pulled towards the woman’s back then felt his crotch bump into her broad backside. Lifting off the ground, he felt himself ride across her bottom then was momentarily airborne before slamming into the concrete floor. “Arggh”. The fatty still held his arm stretching it straight and bending his hand into his wrist.

Ignoring the pain in his arm and shoulder, Mark spun his body on the floor towards the woman and scissor kicked her ankles. Down she went on her back in an ungainly heap with her legs apart, bent at the knees with her feet on the floor. “Ow my back” she cried. Mark sneered, “That’s what you get for being so fat”. “You’re tough love, I’ll give you that, but you’ve not got the skill” he sneered as he stepped towards her.

Mark leapt upon her, forcing himself between her knees, which dug into his sides, reaching forward to get hold of her neck with his hands to strangle her. Her neck was too thick to get his hands fully around, so he tried compressing the carotid arteries. “Time to go to sleep fat woman. Permanently” he sneered as she struggled to pull his hands off.

He felt her feet press against the front of his hips but dismissed it at a futile attempt to push him off. Suddenly he found himself lifted into the air looking down at the woman, supported by her legs. She was leg pressing him!, her thick legs supporting his body and angled towards her face. Peeling his hands from her neck, she looked calm and confident. “My legs are strong. Very strong” she told him. Must be from carrying all of that weight around for years, he thought. No! To his horror Mark found his hands being pushed into the air. To his disbelief, he found himself balanced horizontally on her arms and legs. Looking down at the matronly woman, he was shocked at her strength. “I’m more than you can handle, mister. I’ll teach you for hitting a lady” she said. How could an old fat woman be so strong? Something wasn’t right here, she wasn’t all she seemed. As she bent her legs and lowered his arms, he knew what came next. Nevertheless it still came as a shock when a surge of awesome strength flowed through her legs against his hips. Her legs straightened like a piston and Mark felt himself propelled high over her body with great force. Tumbling head over heels, he relaxed himself for the jarring impact as he landed on his back.

Rolling then standing, Mark watched the squat woman get clumsily to her feet. Her chubby face wasn’t smiling anymore. Her double chin, broad sloping shoulders, thick arms and legs still gave the impression of being overweight, but he now knew that she was a lot stronger than she looked. He had wasted too much time on her; he needed to finish her now. As she was straightening to face him, he charged. He was almost upon her, his hand raised to deliver a fatal chop to her neck when she grabbed the front of his jacket and fell backwards. Seeing her thigh rise in front of him, he felt her foot in his gut as she used his momentum against him. As her back hit the floor, her thick leg straightened and he felt a powerful push against his stomach as she threw him hard, head over heels, several feet across the room.

Wincing with the impact, he rolled and got to his feet in one fluid motion. Turning to face the podgy woman, he watched as she got awkwardly to her feet. “So they’ve taught you a few judo tricks” he snarled. “Jujitsu actually” she replied. “Well you aren’t in the dojo now, love. This is real life”.

Cautiously Mark approached her. The mature woman with the chubby cheeks and high hairline had adopted a grappling stance. The woman moved towards him and they collided into each other. Mark grabs the front of her blouse as if grabbing a gi jacket, she instinctively does likewise. He tries to move his hip against hers and slip a leg behind to trip her but the bulky woman counters and nearly throws him backwards over her hip. Back and forth they went each trying to unbalance the other. Mark now realises this was a mistake, the woman’s short height and bulky build is giving her a stability that he is finding hard to unbalance. On the other hand, he is struggling to keep his balance as she tugs and pulls at him. She is a lot stronger than he gave her credit for. He knows he has underestimated her and it won’t be long before she throws him unless he acts.

 
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