A NATURAL BORN SLUT
Chapter 13

WILLING SUBJECT
(exh, voy, mf, MMf, oral)

by Art Martin

After Mark finally gets a go at her pussy, Mindy has another appointment with the good doctor...

Chapters | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 |

Pursuant to the Berne Convention, this work is copyrighted 2020 with all rights expressly reserved by its author unless explicitly granted.



Standard Disclaimer: This story contains sexually graphic and explicit material and as such it is not suitable for minors. If you are a minor, please leave now as it is illegal for you to be here. If it is illegal for you to read or view sexually explicit material in the community you view such material, please leave now. This story and characters are purely fictional and any resemblance to events or persons (living or dead) is purely coincidental. If you are offended by sexually explicit stories, please read no further. If you are offended by stories featuring group sex, bisexual situations, incest, sex between minors and adults, or any other situation, please check the story code before reading the text. These stories are just that, stories, and do not promote or condone the activities described herein, especially when it comes to unsafe sexual practices or sex between adults and minors.





Ed woke not knowing whether his wife had made it home last night or if she was shacked up somewhere.  But Wanda wasn't foremost in his mind; Mindy was.  Smelling cum on her breath a few nights before and her coming home last night smelling like a well used whore was what was on his mind, but even that wasn't foremost on his mind.  She was, after all, a teenage girl, no doubt a horny teenage girl and was doing what most horny teenage girls do with their boyfriends.  That was a given.  What he hadn't been able to get out of his mind were the morning bathroom incidents this week, especially yesterday when she was kneeling down before him, eye level to his cock.  He had thought then that she was going to blow him.  She didn't, but...

'What is she going to do this morning?' he asked himself as he rolled out of the guest room bed and padded off naked as a jaybird to the hall bathroom.  'If she pretends she's looking for something again this morning, I have half a mind to grab her by the back of her head and...'  It surprised him that he had a raging hard on, thinking the unthinkable as he stepped into the shower.

Mindy's alarm clock rustled her out of the deep sleep of a teenager.  She shut off the alarm and sat on the edge of her bed for a moment to orient herself.  Then she picked up her bathrobe from her study chair and covered her naked body.  Stumbling half asleep into the hall, she went to bathroom just as she's done every morning since who knows when.  Once at the door, she noticed the door was slightly ajar and she could hear the shower running.  'Oh, yeah... Daddy,' she thought as the water stopped running and she heard the shower curtain being pulled back. 

With her hand on the doorknob, she hesitated thinking how she might get away with walking in on him again this morning without him getting wise to her.  She decided to feign still being asleep, as that wasn't so improbable.  Suddenly her mother was in the hallway. 

"Good morning, Mindy," her mother cheerily greeted.

"Morning, Mama," she answered in return.  "Mom, Daddy's still in the bathroom, could I use yours?"

"Sure, sweetheart.  Just don't leave a mess."

"I won't, Mama."

Ed could hear the two females outside the bathroom door, but couldn't make out what was said.  Anticipating another accidental intrusion, Ed lathered up his face with shaving cream and then waited for his daughter to "accidently" walk in on him.  He knew after the first day that it was no accident.  She wanted to see his cock.  Maybe she wanted more, and if she did, he just might give her more.

For years he'd tried to get Wanda to join with him in a swinging lifestyle, but he'd made little progress until lately.  But now that progress was being made with Wanda going out and finding a little strange, a whole new possibility was opening before him... his own live-in teenage play toy.  Until yesterday, the thought had never occurred to him, but after yesterday...  Now all he had to do was to wait, wait until she walked in and then... 

Ed took his sweet time shaving while keeping an eye on the bathroom door the entire time.  He was almost finished and stopped to wait, and wait and wait.  But Mindy didn't come in as he'd expected.  Ed realized that she wasn't going to come in and also realized that he was now running a little late.  He quickly finished shaving, applied deodorant and he'd headed back to his new, and hopefully his merely temporary, bedroom to dress.

Mindy joined her father and mother at the breakfast table.  Her dad acted his usual aloof self, but her mother seemed unusually happy this morning.  To her surprise and delight, her dad offered to drop her off at school again this morning.

Before leaving for school, Mindy's mother pulled her off to the side, so that her father wouldn't hear.  "You have a doctor's appointment this afternoon," her mother said in a low voice. 

"I do?"

"Yes, you do."

"Oh, okay."

"Dr. Tubbs said that a silver Mercedes would pick you up after school."

"Oh, okay."

*****

The short ride to school, however, was unusual as her dad kept asking her about her boyfriends.  For the third time she answered, "Daddy, I only have one boyfriend, Mark.  Why do you keep asking me?"

"I just want to be sure that you are having a good time, that's all.  Does Mark treat you well?"

"Yes!  I've known him, like, FOREVER!"

"I guess he's a still a nice kid," her father stated. 

'You like his dick?' he thought to himself.  'Does he make you suck him or do you rip into his pants and just go down on him?  Does he cum in your pussy, darling?  Does he fuck you once, twice or three or more times a session? How many times did he fuck you last night?  Six times?  Is that why you didn't come sneaking a peek at my dick this morning?' and finally, 'He uses a rubber, doesn't he?'  Ed wanted to know the answers to those questions, but knew he couldn't very well just come out and ask.

*****

Mindy sought out and found Mark before the Homeroom bell rang.  "Mark! Mark!"

"Hey, Mindy-babe," he greeted with a hug and grab of her ass. 

"We can do it today."

"Do what?" he asked.

"Do it!" She leaned into him close and whispered, "You know... have sex."

"A blowjob?" he said out loud.

"Shhh!  No.  I'm over my period."

"You're no longer on the rag?"

"Mark!  Behave!  You can, you know... do me."

"When?"

"Today, Mark."

"I know today, but when today?  The bell is about to ring."

"How about at lunch?  I'll meet you by the door to that room with all the pipes."

"The boiler room?  You want to fuck in the boiler room during lunch?"

"Keep it down, Mark.  But, yes!  Don't you?"

"You bet!  Okay, but you'd better be there!  No excuses!  Christ, Mindy, everybody thinks you've been making a fool out of me."

"I'm sorry, Mark.  I promise I'll make it up to you."

"Yes, you will make it up to me." 

The bell rang and two teens parted, both with something on their mind to thoroughly distract them from class work until after the appointed rendezvous. 

Two hours later Mindy ran into Mr. Wilkes in the halls.  "Why, hello, Mindy," the lecherous biology teacher greeted.  "Join me for lunch today?"

"I can't Mr. Wilkes.  Not today."

"I have something for you."

"I know you do and... I can't.  I just can't."

"Okay, I can save it until after school."

"Thanks, Mr. Wilkes."

*****

Mark was beginning a slow burn when at the beginning of the lunch period, he was at the boiler room door, but Mindy wasn't there.  "Fucking, bitch, she's doing it to me again," he muttered to himself several times before he spotted her coming down the hallway.

By the time she had walked up to him, Mark had jimmied the lock. Looking about to make sure the coast was clear, he quickly opened the door and shoved Mindy inside, following closely behind her.  "Get naked," he told her as the door closed behind them.

"Aren't you going to kiss me first?"

"Oh, yeah." 

He pulled her to him and laid on a long hard kiss that was short on tenderness. 

"Now, get naked, will ya."

"What's your hurry?  We have all of the lunch period."

"Hey, I still gotta get something to eat," he replied.

"What would you rather do?  Do me or eat a mound of cafeteria slop?"

"Both.  Now hurry up, damn it."

"Mark!  This is my first," she lied.

"Well, that's not my fault!  Now are we gonna screw or we gonna talk?"

Mindy knew it was no use in arguing with him when he was like this.  She considered for a moment just telling him to 'forget it', but quickly changed her mind.  She had been thinking about it all morning, was worked up and she wanted his cock inside her.  Dispensing with any tender preliminaries, she began to undress.

Mark was stripped down to bare buttocks (he still had his socks on) and was impatiently waiting for Mindy to get naked as she had to carefully fold each item rather than just discarding them in a pile on the floor as he had done.  Finally she was naked and stood before him, offering her body to him.  Even in the dim light of the boiler room, she looked good enough to eat.  'No time for that today,' he told himself as he discarded the notion of going down on her.

"How do you want it?  Missionary, doggie, or what?" he asked his theoretically virgin girlfriend.

"Well, the floor is kind of cold." She couldn't bring herself to tell him "doggie style" so she simply took up the position on her hands and knees.  For all his hurry, Mark did take time to rake his hand up between her legs, gathering a handful of girlie juice from her wet seeping cunt.

"You really are ready for this," he remarked as his fingers played in her swampy cunt slit and rubbed her clit.

"Yes.  I've thought of nothing all day except this," she replied while rotating her hips and pushing back into his hand. 

"Tell me when you're ready," Mark whispered.

"I'm ready, damn it.  Fuck me, Mark, fuck me."

His hand departed from between her legs.  A moment later she felt the broad head of his uncut cock nestle between her legs, brushing across her perineum and push against the corpulent flesh of her pudenda.  The head of his cock pushed aside the weeping lips of her vulva and labia minor. He had a good angle to simply penetrate her, but he bypassed the maw of her vagina and slid his dick up her trench to tease her clit with his dick.  Mindy, who was very hot to trot, nonetheless appreciated his coital foreplay.  Soon she was rocking back and forth while he remained motionless, content to masturbate herself with his cock crown.

Mindy, who was easily aroused to begin with, began moaning as the wonderful sensations of his glans rubbing her clit quickly took its toll.  Once her hip motions became erratic, Mark knew it was time to complete the act.  Timing her motions perfectly, he pulled back, seated his cock and slid inside her receptive cunthole. 

"Oh, baby," she groaned.  "Your dick feels so good, so good, so good."

"Your pussy feels good too," he hissed back while grinding his cock deep inside her.  "Yeah, squeeze my dick, Mindy.  Squeeze it good.  Damn, if that thing had teeth, you'd be dangerous...  You sure you've haven't done this before?"

"No, baby, but I love it, I love it!  Fuck that cock into me!  Fuck my pussy!"

"You got it, baby, you've got it."

As good as her cunt felt on his cock, Mark had expected her to be tighter than she was.  She wasn't loose by any means, but he had expected to have to stretch her out some. As it was, she was already stretched enough to fit like a perfectly fitted velvet glove.

"Oh! Oh! Oh!" she gasped as her body began to quake.  Now Mark really felt her cuntal tube clamping down on his dick.  "Uh!  Uh!  Uh! Oh, yes, John!  Yes!"

"The name's Mark, not John," he hissed through clenched teeth while pumping away.   Totally absorbed in her orgasm, Mindy really didn't hear what she or Mark had said.  Mark didn't make an issue of it either as his dick had built to the point of no return. 

"I'm cumming, baby! I'm cumming!  Uhhhh!  Uhhhh!  Uhhhhh!"

The teen girl felt her boyfriend's dick pulse and felt his cum shoot up inside her.  That triggered a surge in her climax.  "Aghhhh! Aghhhh! Aghhhhh!" she hollered in sexual bliss. 

Then it was over.  Mark and Mindy had finally fucked.  There was no tender snuggling after the copulation, only the hurry to get dressed and grab a bite to eat.  Mark pulled out, still semi-hard and stood up complaining, "Fuck, I'm starved!"

"Me too, J... Mark."

"Hey, just who the fuck is John anyway?"

"I don't know."

"Bullshit and you're no frigging virgin."

"Not now," she countered.

"Not thirty minutes ago either.  What's with you?  You fuck like a pro, so why all the goody-two-shoes shit?  I mean, why the fucking bullshit?  Hell, we should have been fucking weeks ago.  Here I was, ready to pop a virgin and John's been here first... not that I really care."

"Mark, I..."

"You don't need to explain yourself to me, Mindy, anymore than I need to explain myself to you. 

"Well, see ya, babe... Oh and by the way, thanks for the fuck, I guess."

"Mark!" she called out, but he was already gone, leaving her naked and leaking...

With the flow of cum from her pussy staunched, Mindy slipped on her panties and adjusted her clothes.  "Damn him," she fussed.  "No, I'm not a virgin, thanks to you Mark Miller!  If it weren't for you, Mr. Wilkes...

"Oh, never mind! Shit, this bra is killing me!" 

Slipping undetected from the school's boiler room, Mindy headed to the nearest vending machine to buy some peanut-butter cheese crackers for her lunch.

*****

By the time school was out, she had almost forgotten about her appointment with Doctor Tubbs.  By chance she saw from Mr. Vicker's classroom a large silver Mercedes pull into the parking lot.  'The doctor!' she thought to herself.

"Mindy."

"Yes, Mr. Vickers."

"I have something to discuss with you after class."

"I'd love to," she replied, "but I've got this stupid doctor's appointment and..." 

"I suppose it can wait," he replied sourly.

"I'm sorry."

"Forget it.  You better get going before Wilkes gets here."

Outside she cautiously approached the silver Mercedes parked out near the flag pole.  The driver rolled down the window.  He was a well dressed older gentleman with graying hair.  "Are you Mindy Miles?"

"Yes, I am," she replied.

"I'm here to give you a ride to Dr. Tubbs.  Please get in."

Mindy knew better than to accept a ride with a stranger.  It was kind of odd that such a well dressed man driving such a luxurious car would be picking her up, but as she was expecting to be picked up in a silver Mercedes, she thought it was probably okay and didn't think much about it.

Even when the man followed her into the good doctor's office she didn't think much of that either.  The receptionist was already gone for the day and the man directed her to the examination room.  Soon, Dr. Tubbs entered.  

"Hello, Mindy, my dear," Dr. Tubbs greeted. "How are you feeling today?  Horny?"   Mindy blushed at the directness of Tubbs question. 

"Come, dear, don't be coy."

"I feel fine," she replied.

"How about horny?" 

She cast a glance at the older man who had driven her to the office. Tubbs feigned surprise and explained, "I thought you two had met. This is Dr. White.  He's with the pharmaceutical company who's funding my research.  He's going to join us today to observe. 

"Now answer me, are you horny?  I need an honest answer," the doctor pressed.

"Yes," she whispered.

"Good," Tubbs replied.  "Now on a scale of one to ten, with zero being cold as ice and with ten being ready to jump the first cock you could, how do you score your degree of horniness?"

Mindy glanced at Dr. White and then back to Tubbs in his white lab coat.  "Ummmmm... six?"

"Six," Tubbs repeated as he scribbled in his notebook. 

"Now, since the last time I saw you, have you had full vaginal intercourse?"

"Yes."

"So, you are no longer a virgin?"

"No, I'm not," she replied looking away from White.

"How many times have you had oral sex since I saw you last?"

"I dunno."

"Six times. Ten times?  Twenty times?"

"I don't know for sure.  Closer to twenty, I guess."

"And how about anal sex?"

"Ummmmm, five or six times."

"And straight fucking?"

" I dunno.  A lot?"

"More than twenty?"

"Close to it."

"Your boyfriend has been a very busy boy."

"Well, it wasn't all with just him."

"I see...  So, in the last two weeks, how many sex partners have you had?"

Mindy thought carefully.  In addition to Mark, there was Mr. Jackson, Mr. Wilkes and Mr. Vickers. "Uh, four... I think." Then she remembered Mr. Jackson's friend, Keith.  "No, make that five!" she corrected.

"Five," repeated Tubbs. He looked up and smiled.  "Are you sure it wasn't six?"

"No.  Just five," Mindy replied confidently.

Cutting a glance to Dr. White, Dr. Tubbs reiterated, "Five...

"Well, let's get started shall we?  Undress and get up on the examination table."  Mindy glanced over at Dr. White and then back to Dr. Tubbs. 

"You know what's required of you and I don't have all day, Mindy," Tubbs said firmly.  "Now strip!"

Mindy knew that it wasn't a request and from Tubbs' tone she knew that he wanted her ass naked and naked now.  Immediately she pulled her tank top over her head.  Next went her jeans and sneakers.  Watching White's reaction, she did her best to stifle a smile while removed her bra and soon thereafter, her panties.  Completely nude, her pussy tingling in anticipation, the young teen girl mounted the examination table.

"Feet in the stirrups," the doctor directed. 

With her legs hiked and open, Mindy heard the next order.  "Reach down and spread your labia apart so Dr. White can see your sex." 

While she was stripping, Mindy had noticed that Dr. White didn't have the dispassionate expression one would expect from a medical doctor.  Now the gray haired older man's eyes gleamed and the smirk was unmistakable as she splayed her pussy open to the gaze of the two men.

A tinge of excitement shivered through her as Tubbs' finger skillfully probed her clitoral hood.  Almost immediately her white nubbin poked out from its protective covering. She heard Dr. White mutter, "Son of a bitch."

"Yes, as you can see, Doctor, she is exceptionally responsive," Tubbs explained. 

To Mindy's disappointment Tubbs stopped strumming her clit and moved on to the business at hand.  Before it retreated back into its hood, Tubbs quickly attached the electrode to her erect clit, an act that drew an immediate gasp from the girl.  Then he quickly attached other various electrodes to her naked body to measure her heart rate, temperature, rate of breathing, oxygen level and degree of sweating.  Tubbs generously lubed up the specialized instrumented dildo and inserted it up her cunt.  She heard the humming of an air pump and felt the dildo swell inside her as the good doctor gauged her tightness for science. "Either your boyfriend has a big dick or you've been fucking grown men," the doctor observed dispassionately.

Removing the dildo, he next moved to measure the volume of her tits, but first he checked out their firmness with his hands. Satisfied, Tubbs invited Dr. While to judge for himself. He took his sweet time, not that Mindy minded the strong hands mauling her breasts. With Mindy panting from the tittie play, Tubbs moved things along, applying a generous amount of KY Jelly to each tit to get a good seal, then attached a suction device to each tit and measured the displacement volume.

"Very good!  Your tits have grown appreciably these past two weeks," Tubbs told her.  Upon removing the suction cup from her second tit, Tubbs immediately began playing with her nipples which had appreciably swollen and engorged with blood from the suction.

"Watch the monitor," Tubbs directed his guest.  "This girl as a direct connection from her nipples to her pussy.  Look at the amount of moisture along her slit!"  The nipple play had its effect and the two men discussed her reaction. 

The good doctor released her nipples from his examining finger tips.  When Mindy had recovered somewhat, she felt the first electrical pulses of the clitometer applied to her nubbin.  In mere moments, Mindy's eyes rolled into the back of her head as her cunt exploded and the young girl trashed in the stirrups, her pussy lips opening and closing like a goldfish gulping air.

After what seemed to be a very protracted period for the young girl, the electrical stimulation of her clit ceased. Gasping for breath and covered with a sheen of glistening sweat over her entire naked body, she coasted down enough to open her eyes.  She saw, but did not see.  Then she began to focus and when she did, she saw Dr. White standing between her legs and he was naked.  She felt the big knob of his dick nestle into her folds and she moaned loudly as he slid into her depths. 

Like John Jackson, Dr. White was blessed with an exceptionally thick cock.  But unlike most of the teenage girls in Dr. Tubbs study group, this one didn't complain about him being too big, indeed, she was quickly begging him to fuck her, "Harder!  Harder!  Harder!"  She would have continued to shout, but for her head suddenly rotating back.  Mindy's hyper-extended neck provided a perfect alignment for a deep throat fucking and her voice was muffled as Tubbs drove his tube steak into her mouth and down her throat. 

Just when she thought it couldn't get any better, electrical pulses began to be delivered directly to her clit again.  Like bolts of lightning, repeated waves of intense orgasmic pleasure sweep through her nubile body until she became totally immersed in sexual pleasure to the exclusion of all other sensations and thoughts.  So engrossed in the extreme sensations overwhelming her, she was only dimly aware that the two doctors were trading places every few minutes.

Mindy completely lost track of time, but eventually both her pussy and her mouth were evacuated and the tormenting electrical stimulation of her clit ceased.  Even then, it was quite some time for the level of endorphins to decrease to the point that she regained rational thought.  When she did, she noticed the two men causally sitting by the examination table, sipping on fifteen year old scotch while they discussed her sexual capacity.  

"Looks like she's coming around," observed Tubbs.

"Good.  I need to get home to the wife," White said.

"Then help me get her up," Tubbs told his research partner.  A moment later, Mindy found herself standing between the men who were once again dressed.  She felt vast wetness between her rubbery legs and tasted the spermy residue in her mouth.  Silently she allowed the two men to dress her before Dr. White led her out to his car. 

On the ride home, despite the continuing sexual glow, she became more and more alert. 

"So just where do you live, Sweetie?" he asked her.  Mindy did her best to give him directions and soon they were parked at the curb in front of her house.

"Let me tell you, baby," White told her.  "You are a fantastic fuck and worth every penny I paid.  Here, this is for you."  She sat idly by as he stuffed a hundred dollar bill into her hand.  "I'd like to fuck you again.  But without Tubbs.  How about it, honey?  I'll pay you well."

"My mom doesn't let me date very much," she explained looking down at the money in her hand. "But... she does let me babysit."

"Sure, you can babysit for me... on my dick!"

"I'd like that," she answered with a smile.

"Give me your phone number, honey."  Mindy gave him the number and he entered it into his cell phone. 

"You're really not a doctor, are you?"

"What do you think?"

"No, you're not a doctor!"

"You think too much, honey."


To be continued...

In chapter 14, Mindy has a good time at the Friday night football game, even if she didn't see much of the game...
READ Chapter 14


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