Bigger, Not Older.

Twilight Sparkle prepared two bowls of Cheerileeos for each of them. One for herself, and one for her new brother, Shining Armor. While she did, she couldn't help but to steal glances at him as he took a seat at the kitchen table. But she was crestfallen to find that his once-turgid member had wilted in the trip from downstairs. She presumed that leaving the eroticism of the bedroom for the mundane of the kitchen was to blame. She placed his bowl in front of him and gave him his spoon, doing the same for herself.

She wondered what he was thinking about. In her mother's books, the stallions thought about sex always. Their desire was described as being insatiable. True, her brother was young and inexperienced. But now that he knew what it was, now that he had experienced his first orgasms, surely he was thinking about it now. Surely he was thinking about her, even now, restrained by his sheer will alone, keeping him from mounting her, taking her right then and there in the kitchen, ravaging her. Twilight quivered at the notion.

For his part, Shining was happy with the change in tone of the day. It wasn't to say that he found his first sexual experience unpleasant, quite the opposite in fact. He would forever remember the euphoric sensations of the first orgasms of his life. But it was not at all what he was expecting from his new life. Of everything that he had learned and been told about joining a family, none of it had mentioned anything like that. He was anxious to meet his new parents. He had built up his expectations so much the previous night to meet them, only to find out he would have to wait a couple more days. He was looking forward to hugging his new mom, or playing catch with his new dad. Bed time stories too, even if he was a bit too old for that now, he still wanted to do that for a little while. He enjoyed the breakfast cereal, at least.

He didn't know if he would have any brothers or sisters when he left the orphanage. He hoped that he would have a brother to play with. He grew up with the other colts at the home. He didn't know any fillies, just the mares that took care of them there. He didn't know what he would do if he had a sister. He didn't want to play with dollies of have tea parties. He wanted to play catch, or tag, or something like that with another colt. He certainly didn't expect any of this. But she seemed to know a lot more about this sort of thing than he did. And he didn't mind learning new things.

Beside him at the table, Twilight ate her food and watched him intently. She ate efficiently, seeing her need to eat as more of an inconvenience of her time than anything else. Right now, she could be doing better things- or rather, ponies. To her silent irritation, Shining took his time eating, clearly enjoying his cereal. Restricted from using the oven or stove top, the meal was the least she could provide, as quickly as possible, to put something in him. Before he put something into her, hopefully.

"Ahh, thank you," he said at last, finishing his breakfast. Twilight cleared the bowls from the table. "So, what now?" he asked as she placed the dishes in the sink. "Do you want to play catch? Or fly a kite? Do you have a kite?"

"I do have a kite, actually," Twilight said. "I got it for my birthday. But I never took the time to learn how to fly it."

"I could teach you," Shining said with a grin.

"Maybe later," Twilight said as she sauntered over to him, seductively. "Are you sure that there isn't something else that you want to do first?" She twirled and flagged her tail at him, flashing her goodies. He looked at her in an innocent stupor.

"Like what?"

"Oh come on, Shiny," she said, playing coy. She fluttered her eyelashes at him. He looked at her, and then glanced into the living room. He could see a few of her playthings.

"Oh, okay!" He trotted into the living room, leaving her standing there in the kitchen in awe of his ignorance. "Oh, sweet! You have tinker toys!" he said from the other room. He sat there, playing with the bits of wood. Tinker toys? Twilight followed him into the living room, to find him playing with her molecular models.

"Those aren't tink-" she stopped herself from lecturing him on the purpose of the models and took a deep breath. "That's not what I meant," she said.

"Oh?" he sat there with the colored atom and electron bond dowel in his hooves.

"Here," Twilight said, sitting beside him. "What I meant is," she took the atom ball and dowel, "you have a pole, and I have a hole for it," she said. "So why don't you put your pole into my hole?" He stared at her. He picked up another dowel from the floor, putting it into the model Nitrogen atom ball she was holding. She discarded the pieces, along with the analogy, pushing him onto his back on the carpet of the living room. She crawled on top of him. "No! I mean, why don't you take your pole," she place her hoof in his crotch, rubbing his sheath, "and put it in my hole."

Shining squirmed beneath her, struggling to understand her implication. He thought that they were going to play something else now. But now she was touching his... thingy again.

"Come on, make it hard again!" she said as she continued to rub along his sheath. Unable to help himself, his erection began to harden once again at the touch. "Ah, there we go," she purred, wrapping her hoof around his penis properly.

"Gah!" he gasped. He didn't understand what she meant. She had already given him special 'stallion kisses' to show him that she loved him. And he had already given her special 'mare kisses' to show that he loved her back. And he really did. He was very happy to have a sister, and a family to love, and love him back. She seemed like he had made her happy earlier. Wasn't that enough for her? She placed another hoof on him, stroking him gently. He grew very rigid again. As an older stallion, he would one day envy his ability to once be able to do this in his youth. But for now, it felt like a betrayal by his own body, acting against his will, so easily manipulated at the hooves of the filly on top of him.

"Here we go!" Twilight said at last, lifting her hips. She took his penis and angled it toward herself. She lowered herself slowly to it. Shining bit his lip. She meant to sit on it, as she had done with his head! He feared she would bend, or even break his sensitive appendage. He tried to shimmy away, but she held him in place with her knees at either side of his waist. "Stay still!" The tip came to bear against her marehood. The wetness of her excitement mixed with the precum he was involuntarily generating. She smeared the two against eachother, getting each slick to ease the next step. She aimed him at her entrance, feeling his tip begging to spread her opening slightly. "Are you ready to become a stallion?"

"Uhh,"

She didn't wait for an answer to her rhetorical question. She lowered herself in a swift motion, impaling herself on his staff. In an instant they had each lost their virginity to one another.

"Ahh!" Twilight half gasped and yelped in pain. Her mother's small vibrators, and Shining's horn were too small. And her mother's full-stallion-sized dildos were too large to even contemplate attempting. But the size of this colt's penis was just right to finally break her hymen, and fill her properly. "Ahh," she moaned and winced, clutching her lower abdomen. She had anticipated the pain of her first time from her mom's literature. Shining had seen the length of his penis vanish into her body. His only analogy was his own butt hole. He couldn't even imagine taking something as big as his penis in there. It must have been terribly painful for her to have sat on it like that.

"Are you okay!?" Shining asked, helplessly pinned beneath her. Twilight nodded, keeping him pinned down with her hoof on his chest. Twilight took a couple of deep breaths, waiting for the sting of the burning to pass. She sat there, adjusting to the size of his shaft filling her slender, filly body.

"Yeah, I'm- I'm good. I feel good," she said. Indeed, the pain faded shortly, replaced instead with the sensation of pleasure of the fullness now inside her marehood. She stayed a moment longer, sitting on his lap. She didn't lift herself right away. Instead she was content to sit there, and roll her hips against him, grinding her sensitive nub into his pubic bone. Before long all pain was gone, replaced only with the pleasure of her body grinding against his, and his penis shifting around inside her as she did. "That feels really good!" she said. Shining's concern for her pain melted away with her assurance that she was alright. "How about you?" she asked, genuinely curious about his side of the experience.

Shining felt his penis, deep withing the warm, wet confines of the filly on top of him. Unlike her mouth before, it was absent of teeth, and deep enough to take him inside completely. It was snug, and fit him perfectly. Her muscles squeezed and massaged him with every flex of her body as she move around on top of him. Even in the wake of his orgasms earlier, it was ecstasy.

"Nga, agh ah," Shining uttered, only able to respond in the most basic vowels of animalistic grunts. The higher functions of his brain shut down, retreating into the barrage of sensations assaulting his primal brain stem. His vision blurred as his eyes unfocused and rolled back into his head. Her voice faded away, drowned out by the thundering of his own heart, pounding in his ears. Only the moans of her pleasure punctuated the cacophony of his pulse, serving only to drive his own here-to-unbeknownst desire further. His nostrils flared and his nose became acutely attuned to the aroma of her musk, permeating the room with the dank smell of their illicit coupling. All tactile sensation of his body was focused entirely on his genitals.

Twilight steadied herself with her hooves, lifting her hips and lowering them on him, up and down, along the length of his stallionhood. She could feel every inch of his veiny texture along her inner walls. His medial ring passed back and forth across her g-spot in just the right way, making her legs tremble with each pass. With each lift, her thighs flexed, squeezing his shaft as she rose, keeping a tight, gripping sucking on him, practically pulling him up into her with each descent. She moved slowly at first. Almost agonizingly so. She understood the importance of the first time of doing this. And she knew how quickly the inexperienced colt had climaxed before. She angled herself back a bit, bringing him to bear pointedly against her front wall. She could feel the pressure building in her tummy as he hit her g-spot more directly.

"Grrhh!" Shining growled and felt his jaw clenching. His hooves moved on their own accord, grabbing her by her waist, taking Twilight a bit by surprise. Driven by instinct alone, he aggressively matched her rhythm now, pulling down on her, and lifting his hips to forcefully meet hers with each drop. Twilight's clit smacked against his pelvis more so, adding to her own building orgasm. Twilight only kept her pace now, letting him take the lead as he fucked up into her as much as she was downwards onto him. At last, her desire to be taken by the colt- no, the stallion below her, had come to fruition.

"Ngh! Ngh! NGH! NGAAH!" Shining cried out. His thrusts became more erratic and frantic. Twilight could feel the shaft begin to throb inside her. The tip of his cock began to flare. She tried to dismount, and take his cum in her mouth again, as the mares in the books did. But Shining lurched upright with a sudden surge of strength, wrapping his hooves tightly around her body, holding her down, firmly in place as he slammed it home. Twilight's own orgasm cascaded upon her as she felt his cock pulse and twitch inside her. Her pussy shivered and flexed around him as his flare stretched her wide open. Twilight felt the electricity of her climax shooting through her entire body as the first bout of cum erupted deep inside her. She could feel each volley of his semen rocket up his shaft, blasting into her, painting her depths white as he flooded her. Each pulse of his cock made it swell against her g-spot, making her tremble in each after-shock of her orgasm rolling over her.

Shining continued to squeeze her tightly with his hooves, humping into her even still, long after his last load of his seed had been spurted deep into her. Twilight could do nothing but hang on, until at last, his strength failed him and his arms fell away at either side of him. Twilight hadn't the strength to keep herself upright. She collapsed on top of him, laying against his chest. She could feel her heart still pounding from the exertion. It beat almost as hard as his in his chest against her cheek.

She stayed there, on top of him until she felt him begin to shrink within her. She could feel him begin to involuntarily withdraw from her. She tried to lift herself from him to help the process.

"Hwwmm,' Shining whimpered at her pussy's over-stimulation on his sensitive penis. She held herself still, letting him pull away under her. His penis pulled free with a wet 'plop', letting his semen spill freely from her marehood in a gooey rush, staining his white fur with the mixture of his own cum, and hers.

"So," she asked, "How was that!?"

"Heheh," he giggled with a wide grin, still unable to form a complete thought just yet.

"See? I knew you'd like it!" she said. "We are definitely doing that again!"

"Uhhh, I don't know about that," Shining said, looking at his crotch. As turned on had he had been, his 'little Shiny' had diminished completely, and wasn't showing any sign of returning any time soon.

"Hold on, wait here," Twilight said, running upstairs. Shining recovered himself, getting to his hooves. Twilight came back down, struggling to tow a box with her. She went into the kitchen and got him a tall glass of water. He could certainly use it, he thought as she gave it to him. "Wait a sec," she said. She opened the box, an took out a small bottle. "Here take one of these. Actually, take a few." She gave him a few small, blue tablets.

"What are these?" he asked.

"It's medicine," she said, reading the bottle. He swallowed the pills with some water. "Let's see... guaranteed to enhance performance... see doctor if... lasting more than- FOUR HOURS!?" Twilight gasped. "Imagine all we could do in that time!"

"With what?" Shining asked.

"With your erection!" Twilight squealed. She crouched down beside him, waiting for it to grow before her eyes. But the pills had barely reached his stomach, and Twilight was a horny, impatient filly. She huffed and rifled through the box again. She found what she was looking for. "Turn around," she instructed. He did so, and she walked behind him and lifted his tail.

"Hey, what are you doing back the-EARRAAH!" Shining howled as Twilight pushed the butt-plug into his anus. He had never felt anything like it. It was like he needed to go number-two really bad. Before he could even scurry off to the bathroom, she turned on the switch, bringing the vibrating element inside to life. "Egmhfghrm!" Shining's tongue tripped over itself in his mouth and his eyes went of in different directions, doing their best impression of a chameleon. The plug vibrated against his unsuspecting prostate, bringing on a mechanical response from his penis very quickly. Twilight clapped her hooves happily with her success.

"Just like in the book!" she squeed.

"W-what b-book!?" he studdered, barely able to keep his legs beneath him as the plug buzzed away inside his deflowered ass. Twilight reached into the box, pulling out a thick tome.

The Pony Sutra

"This book!" Twilight said. She opened to a few pages. Shining could only gasp as the various explicit images within. He didn't even know ponies could bend that way! By the pills and plug, his penis bobbed and twitched, at full mast again beneath him. He looked at the wry grin on his sister's face and gulped. "And we are going to do ALL of these!"