Wants and Needs

When Diamond Tiara was very young, she had gotten into a fight with Silver Spoon. It was, in retrospect, a stupid, petty thing. She'd desperately wanted some toy or another that Silver had obtained as a gift or something along those lines. It was so long ago that Tiara didn't remember the specifics, just that the fight had escalated far enough that she had quickly found herself standing awkwardly in her father's study, shrinking into herself under his intense gaze. The whole event was vague, buried underneath the hazy fog of youth, except for this one moment. She remembered the musty, lingering odour of old pipe smoke and brandy. The warm, dull orange light of the small handful of lamps that illuminated the dark green carpet and mahogany furniture. The bolts of anxiety that darted up and down her spine as she dreaded the inevitable punishment that was to come.

“Diamond,” her father had said after some deliberation. “I'm going to give you some advice that my father gave to me when I was around your age.” Slowly, deliberately, he pushed himself out of his chair and walked around the enormous desk that was the study's centrepiece. “When you encounter something you believe should be yours, you do not come to blows over it. You do not kick and scream and demand. You'll never get your way if you throw a tantrum. You might even lose friendships over it, if you're not careful.”

“But I want it,” Tiara had replied, still too young to have properly grasped the concept of subtlety.

Her father nodded. “When you want something, you ask politely for it. You do not demand, you ask. You negotiate. You make concessions. You come to an agreement. You do what it takes to get it, but you do so diplomatically. Do you understand, Diamond?” She nodded in vague understanding. Some of the words had been a bit big for such a young filly, but she'd gotten the general gist of it. “But when you need something, when you see something that should be yours but for whatever reason isn't, you don't ask.”

“I don't?”

Her father nodded. “No. You demand. You clearly state, in no uncertain terms, that it should be yours, and what will be done to correct the obvious oversight that left it in the possession of somepony else, and then you take it. Do you understand?”

She hadn't really, of course. She'd been far too young, at the time, to quite understand much more than the surface meaning of her father's advice. The first part, at least, was simple enough that Tiara could take it to heart even then. She made it clear that Silver would remain the owner of the thing, she just wanted to be able to play with it herself. The fight had subsequently been so quickly forgotten that Tiara barely even remembered it aside from that one moment.

But even twelve years later, though the exact words remained burned into her memory as vividly as if she had just heard them for the first time, she still didn't quite understand the second part of his advice. She certainly couldn't just state that she was going to take something that belonged to somepony else, simply because she felt she deserved it. That would be theft.

“And besides,” she muttered to herself as she stared down at her flaccid cock. “He never told me what to do if what I need isn't something I can take.”

Diamond Tiara had a penis. When she had been much younger, she'd assumed she was unique. That belief had been dashed when she'd learned that Silver Spoon had one, too, but she hadn't really minded. If anything, it felt like fate. She was special, and her best friend was special in the same way. Tiara's ego was healthy enough that even when she'd been old enough to be given the talk and had learned that futas were merely uncommon and not, as she'd believed, unique, it hardly impacted that sense of pride. Even learning that a good percentage of her circle of acquaintances were similarly endowed wasn't close to the reason why she was in such a foul mood. She was still firmly confident in her superiority to the so-called Cutie Mark Crusaders in most meaningful ways.

No, Tiara's problem was something far more serious.

Upon entering the classroom this morning, the students found Cheerilee accompanied by an intensely grumpy looking Princess Twilight. “Today,” she said tersely, “is the Princesses' mandatory penis exam.”

“Ew, what? Why do the Princesses need to examine our penises?” Scootaloo snapped in response.

“Because you're all stupid high school students who are probably messing around with magic you shouldn't to make them bigger and so Princess Celestia has decreed that I do a thorough examination of everyone over eighteen with a penis to make sure none of you are using illegal enhancements. For the sake of your health and safety, of course, and not because she thought it would be funny to force me to look at a bunch of high school cock.” She snapped her fingers. “Now, we've got the whole class to go through, at most two days, and I want to get this over with as much as you all do. So let's... let's just get going.”

Pip, being the goody two-shoes he was, had volunteered to go first. Twilight gestured for him to come up front, and then snapped her fingers as soon as he reached the front of the room. With a flash of deep purple magic, his pants and underwear had abruptly ceased to be. “Because Princess Celestia is just making me do this because she knows it'll make me uncomfortable so I want to get it over with as fast as possible,” she explained bluntly the moment Cheerilee opened her mouth to object. “Anyone under eighteen, look away or something. Whatever.”

The exam went fairly quickly. Pip's cock was enveloped by the same aura that had deleted his pants, quickly surging to full erection. “Four inches. I'm not detecting any magic, and if anything you should probably see someone about being a bit underdeveloped. Here's your pants back.”

“P-Princess Twilight! You can't just walk in here and... and just embarrass all my students in front of the whole class!” Cheerilee shouted indignantly.

Twilight shut her eyes tightly, sighing the sigh of someone who is fucking done with this shit. “Look, please direct any complaints to the creepy pervert in charge because none of this was my idea and I intensely regret having to do this for numerous reasons. Next!”

Tiara, naturally, didn't volunteer. She probably wouldn't have even without knowing it would involve dropping her pants in front of the entire class, but with every student who reluctantly came up and was measured by the Princess, her heart sank deeper into her chest.

When Tiara had been old enough to start having sexual thoughts about her friends, she had compared herself to Silver Spoon. It hadn't really upset her when she'd came up short. If anyone was going to be bigger than her, she could accept Silver Spoon the easiest. She was, Tiara assumed, just exceptionally endowed.

As the mandatory penis exam went on, she found herself coming to the crushing realization that she had been dead wrong on that front. Silver's was closer to a mare's average. As a matter of fact, of the students examined, boy or girl, Pip was the only one that Tiara out-sized. Even Scootaloo of all ponies was a good eight inches. To say nothing of Sweetie Belle. She had been far too proud of her twelve inches of jet black horsecock. Twilight gave it a dubious look, but whatever test she performed came up negative.

Tiara directed a pained look at Cheerilee, who met her gaze but didn't react visibly. “Okay, class,” she said slowly. “I think that about does it for today. Since it's been... quite eventful, why don't you all go home early while Princess Twilight and I have a little chat about boundaries.”

Tiara didn't wait for Twilight to object. She snatched her bag, darted out her door, and didn't stop until she was safely locked away in her room. She quickly discarded her pants so she could glare angrily at her undersized endowment. She couldn't believe that she used to be so proud of something so completely lacking. And, while she'd managed to cut the day short, all that had accomplished was to delay the inevitable humiliation until tomorrow.

Her father's words quietly echoed through her mind once again. If you want something, you ask. If you need it, you demand.

And Diamond Tiara absolutely needed a very large penis.

She reached down and grasped her meat tentatively. “Okay.” She muttered tentatively. "My penis is far too small. It should be bigger.” Nothing. Of course it didn't work. Frankly, she felt a bit silly for thinking it would. Still, her father's advice kept right on replaying itself in her memory like a video on repeat. Saying her cock should be bigger was hardly demanding. And besides, just quietly accepting defeat was unbecoming of a Rich. There would be ample time for feeling silly later if this didn't work. Right now, she needed to brush aside all her doubts, steel her resolve, and make it very clear who was in charge.

Faintly, her cutie mark began to glow, though she didn't notice it.

“Grow.” Her voice was crisp and clear, with all her previous hesitation gone. This was an ironclad order to her body, one that it would obey. And one that it did obey. Tiara's hand jolted away from her member as it swelled – not swelling with blood, but with raw flesh appearing from nowhere through the sheer power of her will.

“Holy shit!” was the first thing Diamond Tiara said in response, briefly dropping her commanding tone. Her cutie mark, still unnoticed, stopped glowing. “Okay, okay, so I just ordered my cock to grow and it obeyed. No big deal.” It was, of course, absolutely a big deal. She couldn't tell exactly how much bigger it had gotten – it was still soft, though the sensation of growth had been enough that it had begun to stir with life. But merely being slightly heftier wasn't enough for her. She took a brief moment to collect herself and return to that state of supreme confidence. “Of course it grew. I ordered, it obeyed. That's only natural.”

Once again, her cutie mark began to softly glow.

“Grow,” Tiara ordered again. Her flesh complied, engorging with blood and swelling to its full five inches and then beyond. A small grin formed on her face as she stared down at her undeniably bigger member. “Grow.” It had already reached full erection, but at the sound of her words it grew firmer. And thicker. Noticeably thicker.

It was definitely a good start, but while throbbing bigger and girthier a fraction of an inch at a time certainly felt good, Tiara had never much had the patience for prolonged foreplay. She was getting bored, and at this rate it would take all night before she reached the bare minimum of what was acceptable. It was time to pick up the pace and start setting concrete goals. Diamond spoke again, clear and strong, accompanied by a brilliant pink glow from her cutie mark. “The average length for mares in my class is nine inches. I will grow to be at least ten.”

Her cock twitched, and throbbed, and then lurched outwards. She didn't even need to measure – her cock had obeyed her words exactly, leaving her exactly one inch above average.

“Only one inch above average,” she corrected herself. Diamond Tiara had never been one to settle for mediocrity, and being so close to the middle was the very fucking definition of mediocrity. Her mind wandered back to the cock examination, and to Sweetie Belle's enormous jet black monstrosity. The biggest cock in the class, of those that had been measured. It had almost certainly had magical assistance, but all that really mattered was that the inspection hadn't found anything. Which meant that whatever Sweetie had done, it had been permanent enough to be undetected by Twilight's magic. Tiara doubted that there was anyone in class much bigger than that, and if she was going to be setting goals, she was going to shoot for the top.

“Sweetie Belle is twelve inches long,” she said, accompanied by another surge of pink light from her mark. “I will be fourteen.”

This time there was no delay. Tiara's cock quickly gained a further four inches of raw size, leaving her with a comfortable two inch lead.

“Thicker,” she ordered next – it seems that specifying exact lengths had resulted in her cock growing to that length and nothing else. Something to take note of in the future; be more specific about keeping things proportional.

And, on the subject of proportions and specific orders, Tiara realized that there was a glaring detail that she had overlooked. “Right, yeah, if I'm gonna have a footlong cock, my balls probably shouldn't be sized for a five inch cock.”

Tiara had never really put much thought into her testicles. They were important, obviously, but they were hardly the main event. They quietly provided fuel without any thought having to be put into it.

But, then, that was the problem. What was the point of having such a big gun without equally big magazines? As it was, she questioned if their output would be enough to clear the full fourteen inches of her shaft. What would the point of having such a big cock be if she didn't put out at least a gallon or so per orgasm?

Her next goal clearly visualized, Tiara's cutie mark once again gleamed with a flash of pink light. “My testicles will each grow big enough to produce at least a gallon of semen every time I cum.”

At first, nothing seemed to happen. Tiara briefly worried that it hadn't worked – that she would be stuck with an undersized, underproductive sack. Those fears were quickly allayed when she heard a sound. A deep, rumbling gurgle, somewhere between a starving foal's stomach and an earthquake. And then there was the weight, the sheer sensation of slowly increasing pressure against her thighs and cock. Her cock twitched, drops of precum pooling at her urethra. Drops that quickly turned into a steady stream of thick, viscous fluid that drooled down its length until it practically looked like she was pissing. Without any conscious input, her hands wandered southwards and once again grasping the monster. Mere minutes ago it had been small enough that she could easily wrap one hand around it, leaving the other free to play with her modest tits. Now, she had to use both hands just to envelop its girth and that was just barely adequate. Her hips bucked rhythmically, once, twice, and with the third she found her strength giving out as she plummeted headfirst over the edge of orgasm.

Tiara struggled to find the adequate metaphor, but eventually settled on the old standbys of being somewhere between a firehose attached to her pelvis and a goddamn volcano, spewing an absolutely enormous amount of hot spunk upwards. Her output painted the ceiling of her room white – fuck, that was gonna be a bitch to clean up later – with a good amount proceeding to fall right back down on her. The next shot was just as powerful, if not more copious. “Mmmmmooooooooorrrrrrrreeeeeeee,” she groaned. And the accompanying flash of blinding pink ensured that she got exactly that. With a rapturous lurch, her balls surged bigger, and her next jet of cum put the entire rest of her output so far to shame. Copious wasn't even remotely adequate at describing just how much there was. It felt like hours passed before she finally started to come down from her orgasmic high. A quick glance at the clock reassured her that it had only been about fifteen minutes.

“Holy fuck,” Tiara managed after a few moments of exhausted panting. It felt like she'd just run several goddamn marathons with no breaks. “That was... That was hot as fuck.” Slowly, she pushed herself back upright, and then beyond that. Her legs shook beneath her as she struggled to maintain her footing on the walk to her mirror. A massive, full body silver-backed monstrosity that had belonged to her grandmother. In spite of being an antique, its reflections were still as crisp and clear as the day it had been made.

“... okay maybe I overdid the balls a little.” It was, without a doubt, an understatement, as big as any she'd ever made before and then some. They were absolutely massive, even in proportion to her cock – easily bigger than her breasts by a noticeable margin. “My balls will shrink by half,” Tiara commanded half-heartedly. And, sure enough, that slight lack of conviction caused by sheer exhaustion was enough that for the first time that afternoon her body completely failed to comply.

She briefly considered sizing up the main event to match, but quickly decided against it. She'd already lost her cool once, and the results of that brief lapse were staring her in the face. If she started again now, she wasn't entirely certain she'd stop. “I can do fine adjustments later, once I've calmed down a bit.”

Speaking of calming down, her shaft was still fully erect and ready for round two. And round three, and four, and onwards. The grim reality of her impulsive demand for more in the midst of her climax, she supposed, was that she'd gotten it. And then some. “Okay, I just need to get off a few more times and try not to command it to get bigger. Then I can just order it to go back to slightly more reasonable proportions. It'll be fine.” And, as a nice bonus, she'd get to have another orgasm on par with that last one. Possibly even two or three beyond that.

Tiara palmed her testicles – she certainly could have gone much bigger with them. Each was big enough that she could just comfortably palm it, though she needed one hand per ball. And they weren't just bigger, but significantly more sensitive. Even her tentative touch felt a hundred times more intense than anything from before – a fact that extended to her shaft proper, as she rapidly discovered. This could potentially pose a serious issue in the near future, if she wanted to finish any time soon. But it would likely take her even longer if she let herself get distracted now, so she pushed the issue from her mind and let herself get to work.

Tiara had always had a fairly healthy libido – as far as she knew, that was normal for futas. Maybe slightly healthier than was, well, healthy. Obviously she didn't have much frame of reference. It would be weird to ask Silver how often she masturbated, and even weirder to ask any of the adults in her life. But two to three times a day, depending on her mood, certainly felt like a lot. It was enough that she had favourite sexual fantasies, at least, and at the moment only the absolute number one would do.

It was a simple fantasy, but a good one. And fittingly, given the current situation, it was very much focused on cock. Silver was there, naturally, naked and looming over Tiara's prone body. She grinned smugly, slowly lowering herself against the smaller pony. Fat DDs squished into Tiara's modest B cups. Well muscled arms caressed her body, slowly working their way down to squeeze her modest ass. And, most importantly, her cock, rock hard and twice as big as Tiara's-

The fantasy was cut short as Tiara realized her mistake. Being bigger than the rest of the class was one thing, and a crucial one at that. But Silver wasn't the rest of the class. She was Tiara's best friend, and it was absolutely unacceptable to leave her so far behind. And beyond that, a big part of her recently shattered worldview had been that she herself had been above average and Silver's ten inches had been fucking massive.

Tiara had fixed one part of that, but the other had yet to be rectified. A mistake, to be sure, but luckily one that was easily repaired.

Her cock still achingly hard, Tiara abandoned her masturbation. She had far more important matters to deal with. She strode across the bedroom and picked up her expensive smart phone from her bedside table. “hey, silver,” she texted impatiently. Once again, her mind wandered back to her childhood, and to that one specific incident. It had taught her how to get what she wanted, yes. But it had imparted another important lesson that she'd almost forgotten. What good was having what she wanted, after all, if she didn't share it with her best friend? “just got a really great gift, figured you'd want a taste. mind if i pop over for a few hours?”

Yes, things were going to be just fine.