Dosage

by friendofloyd

Rating: mature
Tags: Sex, Random, My Little Pony: Friendship is Magic, Princess Cadance, Shining Armor
Length: 2355

Shining accidentally overdoses on a virility potion while trying to satisfy Cadance. Growth Ensues

Shining accidentally overdoses on a virility potion while trying to satisfy Cadance. Growth Ensues.

Will eventually contain, in no particular order: Cum inflation, potions, excessive precum and semen, hyper cock/balls, auto-fellatio, size immobilization, growth, and ponies wearing underwear and socks

Written for Megapone's Fetish Fanfic Fapstravaganza.

Published 2016-07-23 21:30:01 UTC
Last updated 2016-07-23 21:30:01 UTC

Use Only As Instructed

Shining Armor had planned this evening with Cadance for over a week. Juniper incense filled the air, carefully metered to avoid being overpowering. Fresh flowers decorated the room, personally cut by him just that afternoon from the palace gardens. The satin boxers he wore were soft and comfortable, yet they hugged his flank enough to tease the imagination. Shining Armor grunted as he tugged on the final stocking with his magic. They were Cadance’s favorite. They drew attention attention to his height, and left small window of leg visible when paired with his boxers. It didn't hurt that they were cozy to boot. Still, all this effort was to please his wife in as many ways as he could.

Cadance had confessed early on in their relationship that she had a lot of kinks. Every so often, usually before they made love, she’d get this look. A deep blush; a slight stutter; an embarrassed grin. She’d rub fetlock against the other, giving him a sideways glance. “So… Shiny,” she’d start, “I’ve thought of something I’d like to try...” And try they did. Hoofcuffs, roleplay without dice, and “The Silicone Stallion”, to name a few. So it didn't surprise him when she told him she shared her love of semen. “I just love the stuff,” she said, “the smell, the taste, the texture… Do you think, maybe, you could try something for me?” Then she went in for the kill. She placed a hoof on his chest and pouted, and Shining’s resistance disappeared.

This brought him to the package on the table. It had arrived earlier that day from Twilight. She’d agreed to help the couple out as an ‘early anniversary gift’, albeit after much blushing. It was a virility potion, designed to help his output and his stamina. It would let him cum multiple times tonight, each load as large as if he’d been pent up for a month. This alone was enough to cause his shaft to peak out of his sheath, tenting his underwear. He lifted the bottle out of the packing paper, uncorking it. He took a long inhale of the heady scent, the aroma all too familiar. His ears perked as he heard hoofsteps and tuneless humming coming down the hallway. “Sounds like she got here just in time.” Rushing, he upended the bottle, draining most of it in a gulp, leaving a few dregs. Shining jumped onto the bed and posed moments before the door opened.

Cadance entered the room, regalia already put away for the day. Surprise plastered itself on her face as she saw the decorations. Shining flexed on the bed, giving her a good view of his flanks. “Evening Cadance, like what you see?”
She fully entered the room, softly closing the door behind her. “Wow, did you do all this?” Shining nodded. “You didn't need to,” she trotted over to the bed and gave him a kiss
“Hey, I wanted to. It was nothing.”

She hummed and rubbed his chest with a hoof. “It’s very nice. Were you waiting long?” Her eyes flicked downwards to his crotch.The tip of his cock had already pushed out from under the waistband of his underwear, getting hard in anticipation. He grunted softly as she slid downwards, nuzzling his stiffening length. “You certainly look ready to start.”

Shining’s heart raced with excitement, his foot long shaft growing fully erect from the small amount of attention. Already it was harder than he’d ever been before, throbbing in time with his heart. “I just,” he gasped as Cadance gave his flare a small kiss, “took the potion Twily sent.” Precum beaded on the tip, a large bubble forming on the tip. It popped, sending a wave rolling down the sides of the cock as another bubble lazily formed.

Cadance smirked, watching pre drip down Shining’s throbbing length. “Looks like the potion works.” Shining only grunted in response as her hooves worked to coat the entire length in the slick pre. “Maybe a little too well.” Her horn lit up, pulling his ballsack free of their satin prison. She licked the swollen orbs, listening to Shining moan and pant as she did so. “Feeling a little pent up?”

Shining’s hips gave a small buck, causing her to get a noseful of his musk.“Celestia yes!”

Cadance chuckled. “Hrmmm maybe I should give you a little release first. I’m sure you can handle a few orgasms tonight.” She rolled shining onto his back with little resistance. Shining all too eagerly spread his rear legs as she slid closer. His cock pointed straight up, an obelisk of lust twitching around as he twisted and turned in pleasure. “Just lay back honey, I got this.” She sat up, looking down on the oozing length of lust. Her hooves rubbed his balls gently, enjoying how swollen they were.

Shining let out a pitiful whine. “Cady, please…”

Cadance didn't need to be told twice. She opened her mouth and bent downwards. This wasn't the first time she’d given him a blowjob, and his cock slipped into her mouth easily. Even though she could take his whole length without issue, she let his cockhead sit on her tongue, relishing the feeling of pre dribbling out and filling her mouth. She ran her tounge all over his cockhead, looking up at Shining’s expectant face the entire time. Satisfied with the taste of his pre, she moved downwards toward his balls. Lips smoothly passed over his medial ring, his head pushing down her throat. It had taken several tries to train herself to suppress her gag reflex so easily, but it was worth it. The mere action of hilting on his shaft made Shining shudder, the vibration moving up through his shaft and through her.

She grinned the best she could around the cock in her mouth. The flow of pre down her throat had redoubled into a constant trickle, flowing easily down her throat. Even at his most pent up, Shining couldn't come near this level of production. Not that she let him get that pent up often. Sock covered hooves kicked on either side of her head as he moaned. His hips bucked weakly, trying to get some movement going. His eyes silently begged for her to hurry.

Instead Cadance moved methodically, pulling out with much more slowly than she went down. Her tongue traced out each contour of his length, constantly moving around as she moved upward. Shining moaned the entire time, gripping at the sheets as his eyes screwed up in pleasure. As she neared the end, she noted idly that his balls looked just a bit bigger than normal, as if they were growing with his output.

Cadance was caught by surprise when Shining cried out, grabbing at the bedding under them. “I’m- I’m cumming!” Cadance was confused. He might have been pent up from the potion, but she’d just started. He could easily last longer than this. Still, she could see that his balls had drawn up, and feel as his cock twitched erratically. She pulled up faster, wanting to taste his seed directly on her tongue. Even as his hips jerked, she felt as though he was growing longer and wider. Nothing extreme, but her eyes bulged as her teeth caught on his flared head. True to his word, the moment she reached the top, he came.

The first rope of semen was massive, at least half as big as one of his usual ones. The flavor was exquisite, the headiness causing her to stain the sheets with her juices then and there. The first shot was large, filling her already crowded mouth completely. A few drops dribbled out around the shaft despite the tight fit. Almost as soon as she swallowed, she was eager to drink the next shot. She was not disappointed. The next massive burst of seed filled her mouth. And the third. And fourth. She lost count as her cheeks bulged further out and drained as she drank deeply, Shining crying out in pleasure as his balls drained. Even as his orgasm came to an end, Cadance greedily sucked down all she could.

With as much attention as she’d lavished on him, she couldn't help but notice he had changed. It was undeniable now, his stallionhood was growing. Her jaw was stretched wider and wider by his fat cockhead. It pushed further into her mouth, creeping towards the back of her throat. His testciles, previously the size of nectarines, now gently pressed against the inside of his legs, his underwear straining to hold them. Even though Cadance’s stomach felt as if she’d eaten a full meal just from Shining’s seed, his balls were still as plump as they were when they’d started.

It was a small relief when his orgasm finally tapered off. Shining laid panting on the bed as a last spurt of seed sprayed directly into Cadance’s mouth as she pulled off. Her lips made a quiet but noticeable pop as they got around the head. Her cheeks bulged with the final mouthful. Shining’s head lazed around in a post-orgasmic haze. His eyes drifted downwards and locked on Cadance. “Cadance, that was,” he said lazily, “it was…”

In a single gulp she swallowed all the seed in her mouth gasping like she’d finished a pint of cold beer. “Amazing?” she suggested. Shining nodded. Cadance pushed his still slick shaft down, laying it across his barrel. It came up to just behind his front legs, and was easily as wide as one of them.

Shining shook his head and rubbed his eyes. “It’s bigger.” He leaned up to get a better look. “My balls too.” His hoof drifted down and gave the engorged orbs a squeeze to be sure.

Cadance placed her front legs on either side of Shining’s head and ran her tongue from the base to the tip in one swift motion. She ran her tongue past the tip and over his chest and up his neck. Finally she stopped, her face a few inches from his. She smirked.“Sure feels like it.”
Shining shuddered, already feeling himself hardening again. “D-do you think it’s a side effect?”

She gave him a quick kiss. “I don’t doubt it.”

Shining blushed. “Cadance.”

“Yeah?”

“This is hot.”

Cadance suppressed a giggle. “I’m glad to see we’re on the same page.” She lowered herself onto his torso, pressing the still wet length between them. Their fur grew damp as she ground her body against his.

Shining’s eyes screwed shut as he shuddered again. “D-damn, I’m getting hard again.”

Sure enough, Cadance felt him getting hard again, being pushed slightly apart in the process. “That was the idea, honey,” she whispered. For emphasis, she rocked back and forth, sending a dozen little shocks of pleasure through Shining. A rivulet of milky white precum flowed leaked out from between them, barely visible against Shining’s own fur.

Cadance gasped as Shining thrust his hips, bouncing her up a little. She fell off, quickly scrambling upright. Shining barely muttered a quick apology before he felt a spurt of precum hit him on the chin. They stared dumbfounded as for the second time that night, he grew. Shining’s breathing grew heavy in anticipation as he felt the heavy length inch across his barrel, comfortably nestling between his forelegs. Instinctively, Shining wrapped his legs around his girth, hips thrusting as his flared head approached his face. He whined. “Come on…” Despite his best efforts, the climax that seemed so close when Cadance was on him faded like a mirage. Despite feeling as horny as ever, his hooves just weren’t cutting it. He turned as Cadance stepped off the bed. He dopily grinned, barely having the premise of mind to ask “Cady, what are you doing?”

Cadance watched as Shining futily tried to masterbate. His boxers were tautly wrapped around his sack as it rested heavily on their bed. They were growing faster than the behemoth of a cock they were attached to. They easily would’ve hung halfway to the floor had he been standing.. The bedsheets were a writeoff, already saturated with a growing puddle of lust that flowed out and over Shining. “Shining, where did you put the box the potion came in?”

Shining’s futile thrusting slowed down just long enough to answer. “It’s under the bed.” Sure enough, Cadance found the box quickly, and started going through it. “Please, hurry, I’m so horny but I can't get off!”

Cadance dug through the packaging and found an unopened envelope. She tore it open, ignoring Shining’s beckoning calls for just a moment as she read the note from Twilight. The phrases “Concentrated dose” and “Use the eyedropper included” came up repeatedly. By the time Cadance finished the letter her hooves were trembling, though whether from excitement or nerves she couldn't say. “Shiny,” she started, “that bottle was supposed to last months.”

Shining gave her a lust filled look. “Oh.” He patted his shaft. “And this is a side effect?”

Cadance nodded. “It’ll get bigger until every dose takes effect. And it gonna get harder to jerk yourself off each time apparently. It’s like tickling yourself according to Twilight.”

Shining let out a pained whine as a pint sized burst of pre burst onto his chest.“Please dont tell me I’m gonna be blue-balled here? There’s no way you can fit this.”

Cadance bit her lip. Shining wasn't the only one that wasn’t happy about that. “I can’t. At least not yet.” She trotted over to the door, opening it with her magic. “Sit tight, I think I have just the book lying about.”
Shining reached out with a hoof. “Please, hurry.”

Cadance looked back to the bed. “Don’t worry, I’ll be back quickly. And when I get back,” she trotted over to the bed and buried her muzzle deep into Shining’s engorged sack, “We get to see just how much you can fill me.”

Author's Note

Whelp, here is my first story on the site. Hopefully I wont be the only one to find this thing enjoyable.

Either way, feel free to comment.