Doctor and Nurse by ImoutoCommissions

   They plan this out ahead of time, the two of them deciding on outfits 
and discussing what they will be doing. Both of them are planners, and 
both of them like to discuss things thoroughly. Even
   so, despite all the planning, when it actually happens, neither of 
them have any intention of
   breaking character or talking things over then. Better to get that 
out of the way beforehand, to
   make things all the more pleasurable later.

   They use an examination room in the lab that Pai, funded by Ryou, 
uses for his experimentation.
   He is waiting for her in a white lab coat when Lettuce enters the 
room. Her outfit consists of a pale
   pink nurse's uniform, one with such a short skirt that it barely 
allows for modesty, with white
   thigh highs clinging to her legs. Not a fairly accurate outfit for a 
nurse, Pai noted once, but one
   that he preferred nonetheless. Human or alien, it seemed that some 
preferences were universal,
   though he doubts he could do any sort of study to prove that.

   Whatever the case, she enters the room, looking the perfect blend of 
adorable, sexy, and
   professional in her very unprofessional costume.

"Good evening, Nurse Lettuce," he greets her,
   his voice almost detached.

   "Good evening, Dr. Pai," she replies, a little meekly, as if she's a 
shy nurse, somewhat intimidated
   by the doctor she works with.

   "You know what we're here for, yes?"

   "Of course."

   "Excellent. I can think of no nurse more capable to assist me in such 
important tasks," he replies.
   "Now, if you're ready..."

   Nodding, she goes to fetch a pair of latex gloves, snapping them onto 
either hand before
   unzipping his pants so that she can examine his genitals. While she 
goes through the proper procedures, ever the realist in her roleplay, 
she takes notes and ensures that all is as it should be, before she 
begins measuring both the length and the girth of his now-erect penis.

"You're a perfectly healthy male," she tells him, and then blushes. 
"And, might I add, rather well- endowed."

Pai nods, and says, "As expected. Do you have anything else you need to 
check out?"

"I believe that's it."

"Excellent work, Nurse Lettuce. Now, onto the next task for the night. 
Are you ready to help me test out the experimental male enhancement 
formula that I've been working on? As you know, that examination was 
only a preliminary to the experiment."

"Yes, of course."

"Then you may proceed." Lettuce goes to get the jar that she knows 
contains the formula that he has been working out, and, using a gloved 
hand, she extracts some from the jar, and applies the rather thick cream 
to his penis and scrotum. Immediately, before her very eyes, he begins 
to grow, the size of his member increasing in a way that she wouldn't 
have believed to be possible before she met him.

Her eyes widen at the sudden increase in size, and, when Pai sees this, 
he cups her cheek in his hand, asking, "What do you think of the 
results, Nurse Lettuce?"

Blushing at his words and at what she is about to admit, she says, "I am 
both intimidated and filled with anticipation at the thought of that 
going inside me, Doctor Pai."

"Now, then," he says, stepping back and carrying on, business as usual, 
"why don't you take fresh measurements for comparison?" Lettuce, still 
blushing all the while, takes new notes on his size, noting the 
difference, and when she is done, he says, "It's time for your exam. Are 
you ready, Nurse Lettuce?"

Her blush deepens even more at that, but she nods, hopping up onto the 
exam table for him. She lays back, and he puts her legs up in stirrups, 
pushing up her skirt to reveal the side tying panties that she is 
wearing.

"Thank you for making things as convenient as possible," he says, before 
reaching down to untie both sides and remove her panties. Once he has 
them out of the way, he puts on his own pair of gloves so that he can 
begin Lettuce's examination. He uses a speculum to spread her so that he 
can get a good look, and he comments, "Well, everything looks to be 
perfectly healthy. In fact, it's a rather pretty pink color...you know, 
you're showing signs of arousal right now." She blushes even harder, if 
possible, at his words. Sometimes she loses herself so much in the 
nature of the game that she forgets that she is supposed to be turned 
on, and that she isn't being discovered in an indecent situation by a 
colleague. He leaves her spread wide as he goes to press on her 
clitoris, and when she lets out a loud, almost shameless moan, he 
comments, "You don't appear to have any sensitivity issues there. That 
was quite a strong reaction."

At this point, she isn't sure that she can blush any harder than she 
already is, but Pai has already moved on, to the next phase of his exam. 
Locating her urethra, he prepares a dual-line catheter and inserts it 
into her bladder with all the skill of an experienced professional. 
First, he drains the contents of her bladder into a collection bag, and, 
once she is completely empty, he removes it, setting aside and informing 
her that he will be using it for a urine test at a later time. After 
that, he connects the catheter to a bottle of sterile saline, letting it 
flow into, and out of, Lettuce's bladder until the line is ran clear. 
Then, he closes the out line, using the fluid to fill her bladder to the 
same level it was before he emptied it. For a moment, he does nothing 
else, just making her hold that, before he drains it all out and fills 
her again, this time slightly more than before. Pai repeats this process 
several times, and, every time, he gives her a little more liquid than 
before, increasing the amount that she is holding as he goes. It isn't 
so bad at first, just a fresh sensation of fullness that comes and goes, 
but then, the more he adds and the more he empties, the more it teases 
her with that emptiness, until finally, she can barely take it whenever 
he refills her bladder. Each time he fills her now, he triggers the urge 
for her to pee, so each time he empties her, it is almost orgasmic, only 
for the feeling of fullness to return. It gets to where the time that 
she has to hold is like agony, but the feeling of relief is amazing, 
until she is begging him not to fill her any further. She is able to 
hold 2000mL due to her hydrokinesis, and she doesn't think she can 
handle it if he goes past that point. Though she tries to communicate 
that to him, he ignores her, and begins using a pump to handle the 
higher volume of liquid, and even when she tries to beg him not to make 
her have to hold it for a full minute each time, he still does not 
listen. He has always been a man of science first and foremost, and that 
is something she can't help but admire about him. Even in their games 
like this, he has a goal in mind that goes beyond desire or play. He 
reaches 2800mL after what feels like an eternity, and he announces,

"Well, you've passed your previous record, so we can safely say that 
some progress has been made. Now, let's see if you can hold that for a 
minute." The minute feels more like an hour to her, and she has never 
felt this full in her life, because she has never been this full in her 
life.

Once the minute is up, she feels like crying from relief, but only asks, 
in a strained voice, "Are you done torturing me now, Doctor Pai?"

"No, I don't think so," he says, and she can feel herself paling at his 
words. "I'd like to see if I can fill you all the way to 3 liters."

Lettuce is almost certain that she can't handle that, but there is no 
talking her lover, her doctor, and her scientist out of such things once 
he's set his mind to it, and the scientific part of her is so curious 
for answers that it feels like a craving, and she could never really 
turn his experiments down. Still, the idea fills her with a panic as she 
imagines her bladder literally bursting with all of that fluid, and she 
begins begging him for mercy, trying to convince him that she's 
impressed him enough for one night, that they should save this 
experiment for next time, that this isn't necessary for her examination, 
but all of her cries fall on completely deaf ears. Pai begins increasing 
her fluids either way, and she begs him for mercy all the while, though 
he has none.

Fortunately, her fears prove to be false, as he manages to fill her all 
the way to three liters without incident. Then, he removes the catheter, 
telling her, "I would like for you to hold that liquid until you are 
able to empty into a toilet. Now, are you ready for your insemination?" 
While he speaks, he removes the speculum and caresses her bloated 
bladder, and she nods. Pai places his tip at her opening and only 
hesitates for a second before pushing forward, filling her in an 
instant, and only stopping once he is balls deep. She lets out a gasp at 
how quick and sudden he is, and at how his enhanced member stretches 
her. She had almost forgotten how much larger he is, but it is 
impossible to forget now that she can feel it for herself.

"How do you like the results of the enhancement, Nurse Lettuce?" he 
asks. "What are your observations?"

Lettuce is barely coherent in her response, babbling, "S-so much bigger, 
you're so much bigger inside me, you're so much thicker and-and longer, 
and...you're so much deeper, I..." All the while, her bladder is jostled 
by every move he makes, even when not aimed directly at it, and it is 
impossible not to be aware of how distended the organ has become.

While he pounds into her, he reaches up to remove her top, thanking her 
for wearing a bra that has its clasp at the front instead, saying, 
"You've made it so easy for me that I think we can knock out your breast 
examination while we're at it as well." He begins groping her then, 
fondling her breasts in turn, and teasing at her nipples, pleasuring her 
so much that she is weak, that she knows that her orgasm can't be far 
off. But she holds out against her own desire to come, torn between 
waiting for him so that they can come together, and not coming at all, 
because she knows that if she does, she will lose all control of her 
bladder. In her current state, she isn't sure if she could make it to a 
toilet either way, as she isn't sure if she would be able to stand up at 
all, and walking seems like it would be impossible, with her bladder as 
full as it is. Still, she's trying her best to hold out until he's done 
with her, and she holds back her orgasm as well, her need for both kinds 
of relief so overwhelming that she can hardly stand it. Lettuce has 
never been this full before, and that thought keeps replaying in her 
mind every time she feels her bladder jostle. She's never been this full 
in her life, and it's far from the first time she's thought that, 
because Pai has always pushed her limits.

Still, she never thought that she would make it to this point, and she 
wonders if he will try to push her even further next time, and how far 
he thinks that they can go. She is equally excited and terrified of what 
her scientist lover has in store for her. For now, he begins to lose 
himself in his thrusts, and he grows sloppy and unfocused with fondling 
her breasts. He doesn't lose his composure often, but it is in the final 
moments before his climax that he gets the closest to doing so, when 
Lettuce starts to notice his cold exterior start to slip away. Pai may 
not seem like a passionate man to most, but she has seen his passionate 
side and, though it is subtle, it is definitely there and she feels 
honored to be able to bring it out.

"I'm...so close..." he gasps out, his voice sounding strained. His tone 
is always so even, almost emotionless, that hearing his breathy, 
strained voice is a rare delight for her. "I'm..." He trails off, unable 
to finish his sentence, and she can feel that he is speeding up, 
becoming more reckless with his movements.

He's going to come soon, and she knows it, and she isn't sure how she's 
going to hold out throughout, but still, she encourages him. "Please, go 
right ahead," she cries out, urging him to finish. "Don't forget that 
I'm protected by the special porpoise birth control that you created for 
me, Doctor Pai! Don't forget that you can empty all of your seed into me 
without having to worry about getting me pregnant!" Her words of 
encouragement spur him on, and she can feel her own resolve crumbling 
now. She's going to come when he does; she knows that she won't be able 
to stop herself and she knows that, when that happens, she's going to 
lose control of her over full bladder as well, and fail to meet the goal 
he set for her. She knows all of this, but still she urges him on, and 
still she allows her own resistance to fail, because she wants to come 
and she wants to relieve herself so badly now that she doesn't care how 
it happens, even if it is at the cost of disappointing her doctor.

"Just let it all out," she encourages him, even knowing that she will be 
doing the same, but in a different way. When Pai does finally come, with 
one final thrust of his enhanced member, it is with a low groan, as he 
spills his seed inside of her. She isn't sure, she can't tell in the 
moment like this and tries to make a mental note to find out later, but 
she thinks that the volume of his semen has increased with his 
enhancement formula, because it certainly feels like there is more 
filling her than she is used to. And that is the last thing she is able 
to think or register before she is unable to hold back anymore, and her 
orgasm shakes her to her very core, spasms rocking through her pussy as 
she convulses around Pai's member. And in that moment, all control over 
her bladder completely shatters, and she loses what little control she 
had left. The 3000 mL of saline that fills her comes gushing out, and 
not even having Pai inside of her is enough to stop it from spilling 
everywhere, soaking the exam table. It would make quite the mess on the 
floor if it weren't for the fact that the exam table is equipped with a 
drainage system that manages to stop all of the liquid from escaping, 
and every last bit is drained successfully.

Lettuce does not spill over onto the floor at all during the time that 
her bladder empties itself, though she and Pai do get rather wet in the 
process. She is so overwhelmed by relief and by the force of her orgasm 
that it is a very long time before she comes back to her senses, or even 
fully registers what has happened. For a while, she just lays back on 
the examination table, panting and staring up at the ceiling, closing 
her eyes from time to time just to try to clear her mind. It is, without 
a doubt, one of the most powerful orgasms she has ever experienced in 
her life, no doubt enhanced by Pai's enhancements, and prolonged by the 
relief of emptying her throbbing bladder. She can barely register 
anything around her, and can barely even hear Pai as he struggles to 
catch his breath, having a fairly hard time coming down from his climax 
himself. Even he was not immune to the intensity, and it takes him a bit 
to recover as well.

Once he has, and once he can see that she has recovered as well, he 
finally speaks to her. He pulls out of her, saying, "I think that some 
punishment is in order. After all, you failed to hold it...such a 
tragedy, since I was just about to let you go use the toilet."

"M-my apologies, Dr. Pai," she gasps out, still breathless and barely 
able to speak even after coming out of the afterglow.

"Well, Nurse Lettuce, we are striving for improvement, so I suppose I 
can't expect immediate results. Still, a punishment is in order so that 
you learn for next time. You will be made to hold 2500 mL for your night 
shift, understand?" He uses the catheter to fill her bladder to this 
point before using a urethral plug to ensure that she doesn't leak. 
"That is, you'll have to hold that much off the bat. I will measure you 
later, and if you haven't reached 3000 by then, then I will have to 
punish you for not remaining properly hydrated. Do I make myself clear?"

As always, Lettuce feels herself overcome with a mixture of dread and 
excitement at his words, but all she does is nod and say, "Of course, 
Dr. Pai." He helps her up and helps her to the bathroom, so that they 
can get her cleaned up in time for her shift, which is sure to be an 
interesting one now.