Instructing the Tutor: Day 1 Hour 2

Katherine whimpered as she felt her ass expand slightly, and almost pulled off of Mikes hot member, but her desire to rid herself of her flat chest kept her on it and sucking.  From Mikes position above her, he could see his test subjects jeans tighten slightly.

Mike stammered out, "Oh, god, Katherine...you about to get your reward."  His cock swelled. His face grimaced.  Katherine could only grunt slightly as his member quivered and bulged in her mouth.

"Hereitcomes!!!"  The hot seed jetted into her mouth.  Mike rationed the first portion; he wished to study its effects slowly.  Four hot jets flew from the swollen cock.  It coated the insides of her mouth; it was sticky and to Katherine surprising sweet.

She moaned and sat up after the last jet slid down her throat. Mikes deflating member slipped out of her mouth and a slight drop of cum dripped on to her lip. Which she quickly licked up, she did not let any go to waste.

A short moment passed, and Katherines stomach rumbled when the cum reached it, and her breasts began to grow warm and quivered slightly.   It is as if her breast had given a hiccup.  They swelled up a little over a cup size to a large C cup, pert and full, and began to pull her formerly loose sweater taut.  Katherine moaned sexily at the sensation of swelling and looked to Mike.  What... what just happened... why did my butt swell... what... what did you do to me?!?!

Mike stated simply, I told you, the biggest ass has the dirtiest mouth.  He flopped himself onto the couch.  And you said... 

P... p... pe... pe.... cock, she struggled at the word again.

"Now watch.  Mike instructed.  He began rubbing his hands together in anticipation, grinning wide.  Katherine gasped as a feeling of warmth washed over her and flowed into her ass, leaving it more swollen.  The distinct sound of clothes stretching could be heard, but it did not last long.  The jeans held up under the strain.

But... how... why can't I say...  She began to panic as the sheer impossibility of the situation washed over her. 

Katherine, <>I think</b> you should calm down.

She calmed down noticeably and in a fleeting show of resistance began to put her hair back up in its scrunchy.  It's... it's just so strange... she says.

I know. says Mike, playing along.

Katherine sat on the couch next to him. She admired her new breasts, but she can only enjoy it for a moment.   Then that pang, that familiar feeling of shame came over her.  She could have sworn they'd be bigger for some reason.  Katherine looked down at her chest and frowned slightly. They still seemed so small to her.  She thought to herself, <>I was flat before, but these are more like an A cups</i>.  She bit her lower lip as her eyes fell back on Mikes dick and she thought of what just happened.

Thinking of something in particular, Katherine? Mike asked.

She blushed again.  Maybe

Her hands ran over his shoulders and down his sides.  She bit her lower lip harder as her eyes fell back on his magical tool again.

They'll be more that later. Mike says as he zipped up his jeans, stuffing his penis back into his pants.  We should get back to studying don't you think?

Katherine gave a sexy pout as he zipped up, but her mind returned to her previous duties and the extra credit she was supposed to earn. You're right...we still need to get you to pass that test.

Katherine picked the textbook back up off the coffee table and tried to find the spot where they left off.  As they went over the problems, it seemed more like they're doing them as an assignment together than Katherine providing tutelage.  While attempting to explain what little she still remembered of the co-efficient of friction, Katherine absentmindedly rubbed the underside of one of her breasts.

So, yeah. Plugging that in should be the answer.  Mike said as he noticed her breast touching and he began to wonder just how horny she had become.  He had totally forgotten how much of the serums he had given to her.  A little more wont hurt, so he got up to get her another glass of the arousal water, Thirsty?

Katherine is lost in thought.  Each problem seemed more vexing than the last.  As they continued doing problems together, she kept stroking at the underside of her breast, feeling the fabric as it slid across her skin. She squirmed slightly on the couch, her tightening panties digging into her hips.  Katherine smacked her lips at the suggestion, Please... I'm parched.

Mike delivered the water to her and asks, Katherine, <>I think</b> you want to tell me the dirtiest sex act you've ever done."  Mike waited patiently for her dirty mouth to flow freely and thus, change her more.

Katherine, with slight beads of sweat forming on her brow, thankfully took the glass from him and drinks a quarter of it in one gulp.  Dirtiest sex act? That's a funny question.

You know what I mean. Something like, have you ever taken a penis in your buttocks?  Not often had Mike heard someone attempt to speak while avoiding all slang.  It sounded strange.

Well actually.... she started.  There was this one time that Craig and I were at the park...and he was felling kinda frisky...

"Frisky?" Mike looked saddened by her completely June Cleaver way of describing arousal.

She continued, So we went behind some bushes and after I sucked him off I let him stick his cock in my ass.  He fucking went at my rosebud for a little while and then came all over my backside.  It was pretty fucking hot.

Mike stared in anticipation, and counted four words of penalty.  Katherine began to moan as waves of energy flowed out form her pussy and into her ass.  The previously loose pants pulled very tight and show off her enhanced posterior and her bulging lower lips.  This elicited an even larger moan from between her upper ones.

My God, Katherine, your rear! Mike exclaimed in delight and his member swelled at her plight.

Her jeans showed remarkable resistance.  She bent over and clasped at her rear with her hands and squeezed the cheeks.  This brought a soft coo from her lips.  It felt so wonderful to her.  Her eyes caught Mikes swelling member and it drew her immediate attention. 

Think you could tell me the science of that? he smirked commenting on her recent growth.

Science... she growled lustily, That can't be science... You made me say that didn't you!?!

Made you say something, thats ridiculous.  He continued, That makes no sense at all.  

Her panties bunched in her slit.  She moaned and pawed at her crotch a little, trying to pull them out of her crevice through the jeans, and failed miserably.  This activity only excited her more in the effort.  She would have to live with the camel toe created by her panties and jeans.

Oo... g-gawd...  She tried in vain to unbutton her pants, their tightness gave her great difficulty.  The pulling of the denim against her lips only made things worse and the fabric began to grow dark with her arousal.  

Katherine, did you... He pointed to the dark spot, "have an accident?" 

N... no.  She grimaced as her fingers clumsily tried to undo the button, but with a slick coating of sweat they only slipped off.

That's okay. Just leave them, its a leather couch Mike stated calmly.  His thoughts drifted to the absolute elation that will come when her soft skin tore through the denim.

Katherine made a face as she sits down on the couch.  The leather cushioning and her jeans creaked.  Her lips bulged noticeably against the front of her jeans, and the smell of sex was clear in the air.  Mike inhaled deeply and smiled. He began to talk to her about the status of their studying, but through her arousal she only caught the last two words, Extra credit? 

Katherine moaned at the sound of those magical words, confusing the studying with accomplishing her transformations.  She ran her tongue over her lips and finished off the rest of the glass of water in front of her.  As the drug laced water hit her system, she slouched back in the couch and stared at the ceiling, her hips bucked a little as she did so.

Hey, you try to figure out problem 10, I'm gonna get some fruit to munch on.  Mike went off to the kitchen to get the next in the series of his experiments. 

Uh... okaaaay, She leaned forward and picked up the pencil, and was finally able to hold it after dropping it numerous times.  She wasnt anywhere this clumsy?  Was she?
 
Mike returned with a bowl of strawberries.  He observed Katherine outlining the problem, making slow progress at something that she would have known nearly instantly before.   

Oh! Strawberries! Those look delicious! Katherine exclaimed.

Eat up. I read somewhere they have the ability to help cognitive thought. He added mumbling, And also dye your head a sensual red.  Mike thought of how inspired it was to make that cupcake a universal receptor for all the future changes he would perform.

Mmm... thank you.  The glittering berries distracted her from her near madding arousal... mostly.  She took a bite of the strawberry, savored it as she chewed at it. With each bite her eyebrows lightened slightly until they were the red matched the bowl of fruit in front of her.

Mike pondered about the sparse hair on her moist, hidden clam.  He thought to himself, <>Id just die to munch on a red carpet.  That will definitely be something I can scratch off my bucket list</i>.

Katherine worked her way through the berries, her ponytail grew lighter and lighter. Eventually it took on the same red hue as her eyebrows.   And, coincidentally enough, her hair smelled faintly of strawberries.

While she ate, she rubbed her hips against the couch, trying for a little stimulation to curb her growing arousal.  Wow... those were really good berries Mike. You must have gotten a great batch.

Mike replied, Best in the store I guess. A strand of hair fell in front of her face.

Her mouth opened into a wide 'O' as she sees the hair fall in front of her eyes, My hair it's... red?  She pulled a few more strands out into the light, And so silky... what's... how did that happen?

You didn't dye it before you got here? He was trying to keep her stuck in lie as long as possible.

She looked confused for a moment as she stroked at the silken lock, Yeah, I guess I did... I felt like it was time for a change you know.  Her hand rubbed at the underside of her breast again before sliding down to the front of her jeans.

Snapping them both back to reality, Mike said, You know we should probably turn the page soon? 

Katherine felt immediately embarrassed knowing she hadn't helped Mike much at all.  S... sorry...  She blushed deeply at the realization that she was not making much progress. With a jittering hand she turned the page, tearing it slightly in the process.

Oh, sorry again...I'm just so clumsy today.

Katherine tried to look at the next problem, but her eyes kept drifting to Mikes crotch.  The arousal water she consumed earlier began to take a stranglehold of her reason and body.  Every slight movement was pressure on sensitive body parts.

Katherine...you are so usually together Mike said while closing his book in front of her face.  Katherine did not even notice this overt act.  Her mind only held a small hold to the idea of studying.  Her brain told her that there was much more important things to do.

I know... I've just been... uh... distracted.... since I got here...  She stated in a mixture of genuine confusion and just a hint of seduction.

Why are you so clumsy today?  I asked you to be my tutor because I thought you had a handle on this stuff.

Katherine began to freeze up, as every movement caused stimulation to run through her body.  Moving her leg pulled the denim against sensitive areas... moving her arms yanked her sweater against her chest.

I just don't know.  She let out a loud sigh of frustration, We were doing so well, but some of these problems are just getting to me.  I just need a moment to freshen up, okay?  Katherine excused herself to Mikes bathroom.  Once inside she tried to take inventory of her entire situation.

Leaning on the sink, she panted slightly.  Her gaze drifted toward the mirror.  She saw her reflection for the first time since she arrived.  Katherine examined her luxurious red hair that now crowned her head and cascaded down her shoulders.  She inspected her breasts; they felt funny but are still painfully small.   What was most troubling was the tightness in her pants.  She fumbled with the button, in an effort to take stock of the changes to that region.

Fuck.... what's happening to me? She murmured as she looked in the mirror.  It's then she remembered the effects of her vocabulary.  Another jolt of pure sexual energy coursed through her body as her ass swells up even more, straining Katherines jeans to a near breaking point.  Grunting with effort, she managed to undo the button and finally loosened the jeans.  

With careful hands she extracted her bunched up panties from the wet slit.  Gazing with curiosity as some crimson hair fell off her pussy and floats down to the ground.  It lefe a neatly trimmed patch centered on her crotch.  A sensual, cardinal V.

Swollen and red, her pussy throbbed for attention, and she slipped in a few fingers with trepidation to oblige.  She moaned softly and fell back against the door to the bathroom as she attempted to reduce her level our arousal.  But her eye caught something in the mirror that makes her stop.

She saw her tits, reflected in all their B-cup bra glory.  While they do strain the cups, she cant help but think about what might be.  Hmmph... She sighed in frustration.  Then, like a rainbow on a rainy day, the memory of what caused Katherines breasts to swell surfaced in her lust addled mind.

You okay in there? Mike called from outside the door.

Katherine strained with effort and managed to pull her jeans halfway up.   The formerly normal fitting garment was transformed into a pair of extreme hip huggers on her new curves.  She splashed some water on her face in an attempt to cool down and shouted back, Im fine!  Just washing up!

As she turned away from the mirror she caught a glimpse of her ass.  She swayed to the left and right a bit and admired it.  She lovingly ran a hand over one of the tightly contained cheeks, Not bad at all.   After a quick dry off with a towel, she emerged from the bathroom and walked into the living room again, her hips swayed seductively with each step.  Mike could not help but notice her pants were a lot lower than when she went in, and saw the very top of her crimson snatch poking up from underneath.

Feel any better? Mike asked.

She ran a hand through her hair as her eyes darted between the textbooks and his crotch.  Y...yeah.  A lot better.

Good.  By the way, I love the red hair."  

The thought of pleasing Mike sent jolts of excitement straight to Katherines brain.  Thanks!  She giggled and undid the scrunchy, letting her hair fall down around her shoulders.
Her hair had lengthened a few inches since eating the strawberries and a few stray hairs grazed the tops of her sweater covered bosom.  She noticed them; they draw attention to her chest again.

She cut the silence, Mike... you don't think I'm to... small... do you?

Mike cant believe his good luck.  With his simple shame command earlier, Katherine was stepping into all his traps without any further urging.

Actually, yeah...but I have to tell you...I'm a bit of breast man.  You'd have to pretty damn big for me to tell you otherwise.  He made a motion with his hands to show breasts that touched the floor.  The thought and sight excited her so much her arousal kicks into high gear.  Waves of arousal washed over her body as he motioned with your arms. 

Because... she began to walk toward Mike, I'd at least like to be average.

Average for me?  Or for society?  Mike began adjusting his cock in his pants in anticipation. 
 
Society at least  She seemed conflicted over the words... something seemed off.  Cant you help me out with that?

Help you with what, my red haired vixen?  Mikes new name for her brought her excitement.  

With my br... bre... tits.  She stammered out.

The sound of ripping filled the room.  Another waver of energy washed over her as her ass enlarged again.  Though they had been really working hard, her jeans ripped open at the seams and her ass bounced free.  Katherine dropped down to her knees and gasped at the sudden sensations.

It is the nicest ass Mike has ever seen.  Round and smooth.  An applebottom rear to be sure.  But he stood akimbo and wondered if it will go with the body that he had in store for her in the end.  Katherine sat on her knees for a moment and wobbled side to side, she ran her hands over her ass feeling the smooth gentle curves that had formed.

<>I think</b> you should open your mouth" Mike said aloud.  With her on her knees it was a sight to behold, the ultimate sight in subjugation.

She lovingly opened her mouth, and fluttered her eyelashes at Mike.  She dripped with excitement.  Mike walked over and drooled a small glob of spit and saliva into her waiting mouth.  The sight of her accepting his spit hardened his cock.  The knowledge that this act had altered her mind in order that she actually desire any future changes tickled his imagination.  He hoped and prayed that he didnt need to tell her to swallow.

Katherine caught the glob of spit on the tip of her tongue.  The slippery offering rolled down her tongue and into her throat.  She gulped audibly.  She shuddered and stared at the bulge in his pants.  From above he saw the look of longing in her eyes slowly transformed into one of lust.

Katherine?

Yes, Mike?

He tested out her new resolve, What if I told you that every dirty word you say would make your butt bigger?

Does... doesn't it already? She replied.

Yes, it does...but look at it.  The chemicals in his saliva bonded with her brain.  Doesn't make you wanna say something?

Images of her swelling burst through her brain as she remembers the feeling, the changing

Fuck yes it does!!  But I still want that cock!! She shouts.

Her posterior quickly swelled out and she writhes in pleasure.  She is then able to rest comfortably on the new padding as she tried to maintain her balance.

Mike stepped around her.  He reached down and ran a hand down her new ass.  Katherine suddenly realized it is the first sexual touch since she was attached to his cock.  I think this is a lovely start.

She moaned softly as she rubbed back against his hand, fantasy images of a new Katherine floated through her brain.  She noticed that Mikes cock had begun snaking down his pant leg.  Suddenly she remembered how little cum it gave her last time.  This upset her.  She moved her hand to his pants and rubbed against it.  She squeezed it lightly.  You're not going to hold out on me...your jiggly red-haired vixen?

No, Im not holding out on you.  I just want you to be fully aware of the repercussions.  Why don't you tell me what they are? Mike stated.   This was his chance to hear her wish for bigger breasts and simultaneously grow her ass.  It left him at the point near salivation.  He unzipped as she began to speak.

I want to suck on your cock until my tits are fucking huge. She said very matter of fact.  She moaned and spilled more natural lubricant from between her thighs as her ass surged outward again, fueled by her three utterances.

How big, my red headedslut?"  The word brought her as close to an orgasm as shed been all day.

Her eyes rolled back and she shivered at the sound of her name, Huge... She sighed lustily and tried to sneak her hand into his jeans and down his pant leg.

Huge you say She began stroking his cock that now sat free and open in front of her face.  She gazed up at his erect member.  Then she slowly leaned forward and licked at it with her tongue.

It was now Gregs turn to moan.  Mike continued, Thatll take quite a bit of cum, Cherry slut.

The room filled with sexual energy.  Mike was having a hard time remembering what commands he had given to Katherine and what was her own doing.  

She spoke, You can give it to me... right?  Right?

Yes, but I need something from you.

In a panic she stammered, What?  Anything?  Just tell me?

I foolishly put a limit on my semen production.  Mike shrugged his shoulders.

A look of horror and dread swept over her face.  You what? You can... no....your strawberry vixen needs it.

Mike answered, It was for my own safety.  SO my body didnt go all hyperactive it trying to produce semen and forget toI dont knowbreathe.  That is unless I sample from...you.

She raised an eyebrow and looked confused.

Taste your juices... Mike added for clarification.  If I take you into my body, I will produce the amount of ejaculate you desire

She looks at eh erect cock inches from her face.  The need has grown to strong, Anything... you know I said that.... I can't be tiny any longer!

Mike lifted her to nearby leather couch.  He set her down.  There was something different now.  A tenderness that hadnt been there before.  She wasnt a compliant sex slave, but more of a sole mate of his creation.  Mike looked down on her and smiled.  He had made an excellent choice with Katherine.  His strong hands grasped tightly to flesh around her waist.

She smiled and giggled as she rubbed up against him and the leather couch.  Mike heard the giggle.  <>God, shes more perfect than I could have ever imagined</i>, he thought to himself.

Mike removed the tattered denim remains from around her waist and hips.  He threw them to the floor, where they land with a wetter than expected, <>Splosh!</i>

The smell of feminine arousal hit Mike like a Mac truck.  He stared down at the plain white cotton underwear she has on.  They are a mess of rips and loose fibers.  However, even before they were so thoroughly tested, they were not the underwear fitting his new creation.

<>I think</b> from now on you will wear sexy underwear.  He eliminated the chance of seeing those horrid things again.  He slid the panties down her new feminine curves.  As they reach the end of her legs, Mike noticed that they were nothing more than a towel at this point.  

He was going to thoroughly enjoy himself with Katherine.
To be continued
