Endurance Test
Sweetie Belle gave a low sob as the final stallion pulled out of her.
"Nothing like some teenage pussy to get your blood flowing," he said, cum still dripping from his cock. "Any of you guys want a second round?"
One of the others shook his head. "Nah, let's get on with it. I can tell the little slut is gagging for it."
They all laughed. Sweetie could only shudder silently as a few of the stallions left the room, only to return moments later with half a dozen large, slobbering dogs on leashes. A snare of unicorn magic grabbed her by her own collar and lifted her to her hooves. She cried out from pain, her legs stiff and sore and her whole lower body in cramped agony from being fucked hard by stallions twice her size. Her captor led her to a golden retriever, and pushed her head down.
Her stomach sank as she got to eye level with the dogs bright-red cock, dripping pre-cum onto the floor and reeking of canine musk.
"Same rules as always, slut. Get all one-hundred, and you're free. Throw up, and you try again tomorrow night."
The stench of the cock was overpowering, a sickly sour-sweet smell with a slight tang of piss that radiated in waves from the dog's dick. It turned her stomach to even look at it, but Sweetie Belle didn't dare think of being sick, she knew all too well what the consequences would be. It was fat like a sausage, thick as a carrot, with a pointed tip. Drops of clear fluid oozed from the tip, running down the shaft and dripping onto the floor.
She knew she couldn't wait, but felt rooted to the spot. If they thought she was refusing, the stallions would fit an oversized ring gag in her mouth and force her head down on each and every cock. As bad as that would be for her, she knew it would be even worse for her two best friends. She closed her eyes and steeled herself.
Sweetie Belle's soft, pink lips wrapped around the cock, the heat of the beast radiating into her mouth. Her tongue lashed over the very tip, and the dog immediately rewarded her with a spurt of slick, salty precum. All she could smell was dick. Her whole body felt weak and limp, and her stomach rumbled threateningly, but she had no choice. She moved her head forward, enveloping more of the shaft.
"C'mon bitch, we haven't got all night," said one of her captors. "Why don't you take it down your throat?"
She whined helplessly with the cock in her mouth. The price of ignoring one of their degrading 'suggestions' would be to have a far worse one forced upon her. The first time she'd refused such an order, they had made each dog fuck her in the ass, let the cum dribble out as she sucked the cock clean, and then lap up the jizz from the floor. Since then, she'd done her best to obey.
She pushed forward, only for the tip to jab her unprepared throat making her gag and sputter. Her stomach felt like a tumble-dryer. She knew that if she threw up, she'd lose the game and suffer for it, and she knew her captors knew this too. Most of their pleasure was in watching the mare suffer. Inhaling through her nose as the cock spewed more precum into her mouth, she steeled herself for another try.
This time, she pushed her tongue flat and held the back of her mouth open. The pointed tip slid past her tonsils without tripping her gag reflex. If she took it slowly, it wouldn't be too painful. Humiliating and degrading, but not painful.
The golden retriever took that moment to put its front paws on Sweetie's back, and thrust its hips forward. She gave a strangled squeak as the length of the cock was pushed into her throat in one swift movement. The front of his knot pressed into her lips.
Tears dripped down her cheeks and slobber down her chin as the dog began to hump her face.
A bark was all the warning she got before the dog climaxed. She felt heat and wetness as the dog pushed forward, pouring jizz directly down her throat. It settled in her stomach like liquid lead. The twitching of the cock and the dog's unsteady hip movements made the shaft slip free of Sweetie's throat, and the next few spurts filled her mouth. It had an unthinkably vile texture, the silky feel of full-fat milk but warm and salty, with a horrible bitter edge and a musky tang that made everything stink of urine. Her cheeks swelled out before she could gulp it all down.
One of the stallions pulled the dog away, its cock coming free from her mouth with a *pop.* She pursed her lips to avoid spilling any, took a wavering breath through her nostrils, and forced herself to swallow the slimy load. As she stood and tried to breathe, every sense felt tainted. She could still feel the heat of the dog's shaft on her lips, its musk filled her nostrils, and the taste would stay with her all night.
The stallions laughed at the crying teenager, and brought forward another dog.
Sweetie Belle's nostrils flared as she sucked down the third load of dog cum. Her neck already ached from craning it at an angle to not poke her 'lovers' in the stomach with her horn, her mane clung to her face with sweat, and her stomach grew queasier with each passing second. She slowly pulled her lips off the dick until the very tip slipped out, scrunched her eyes shut, and swallowed.
"Fleh," she muttered. They brought the fourth dog over, a massive Saint Bernard. She only hesitated for a moment before she ducked her head under this one and began to work.
She took the tip into her mouth and sucked gently, tasting the tang of a fresh cock. That was one of the worst parts of this task. At least when they made her service stallions the initial taste would quickly fade, and she could try to blank out everything until she had to gulp down a mouthful of seed. The dogs never lasted long and there were always so many, giving her that sickening sour-musk taste every single time.
The dick sunk an inch deeper in her mouth and rewarded her efforts with a dribble of salty pre-cum. All Sweetie Belle could do was continue to suck. She bobbed her head back and forth, her gag reflex temporarily tamed, as she felt a stallion wrap her tail around his cock and begin masturbating with it. By the time the dog climaxed it felt as if all the saliva in her mouth had been replaced by pre-cum. She took a deep breath after swallowing the silky, slimy load. As they led the dog away, she heard a grunt from behind and felt the familiar splatter of thick, ropey cum on her rump and flank. He spat on her cutie mark to emphasize his contempt for her, and a labrador was brought to her. This one lasted barely a minute.
The sixth and seventh dogs were similarly fast. The eight took more coaxing before making her cheeks bulge out with a thin but voluminous cumshot. They made her deepthroat the ninth. The taste of dog dick didn't get any better, in fact it seemed to get worse, as if her mouth was building up a patina of canine grossness that pervaded her senses and only solidified as she sucked more dicks.
Tears dripped off her chin as the tenth dog filled her mouth with jizz, gulping desperately to avoid spilling any. As she pulled her mouth away, she groaned. There must have been a cup's worth of cum in her belly now, and it wasn't settling at all...
They brought more dogs
The eleventh dog was a staff, one who seemingly had no reaction to Sweetie Belle's attentions. Her jaw ached as she sucked for what seemed like half an hour, a steady flow of pre-cum dripping down her throat. The dog barely appeared to orgasm, it just spewed more and more precum until it tucked its tail between its legs and scampered off.
The twelth dog was a springer spaniel with a thin cock and boundless energy. Its cock fortunately wasn't long enough to trip her gag reflex, though she struggled to keep it in her mouth as it excitedly humped her face before she drank down its thin, slimy jizz.
The thirteenth dog was an Irish setter, a nervous, gentle thing that wouldn't mount her face or let her underneath him. Her captors made the dog lie on its back so that Sweetie Belle had to lean over to service him. His legs twitched faster and faster as his orgasm approached, and it was the only dog that gave her a chance to prepare before filling her mouth.
The fourteenth dog was a great dane that was almost as big as the stallions, standing a few inches taller than the teenage mare. She had to stretch just to wrap her lips around the tip of his cherry-red penis. His cum didn't taste too foul, just salty and slightly fishy, which was fortunate because he filled her mouth with more cum than any other dog so far.
The fifteenth dog was a German shepherd who made her heart thump in her chest and forced her to fight down a sudden surge of nausea. It growled at her through sharp teeth, making her take a step back until one of the stallions kicked her forward. When it deigned to let her approach, she took its cock into her mouth and groaned around it. The cock was as thick as a stallions, and filled her mouth with gooey-thick sperm that clung to her gums and cheeks.
The sixteenth dog was the friendliest, a border collie that approached her gently and nervously licked her face before the captors made him lie down. She almost giggled. The dog whined softly as she gave him a blowjob, and filled her mouth with a small, watery load.
The seventeenth, eighteenth and nineteenth dogs were all black labs, all pushed upon her in quick succession, who all humped her face obnoxiously, almost tripping her gag reflex every time as their knots battered her lips, and all spewed a copious amount of piss-thin cum.
The twentieth dog was a golden retriever, with a musky, strangely tangy cock. She was almost glad when his cum washed the taste of dick out of her mouth.
The twenty-first dog was another German shepherd. This one was far more direct, almost racing to mount her from the front and bury his dick in her throat. His cum was even thicker than the last German shepherd's had been, the texture of cold custard.
The twenty-second dog, a dalmatian, was another chore. It took as long to make him cum as the last four dogs combined, and the only upside was that he didn't constantly leak precum as she worked. She felt almost feverish as she guzzled his load.
The twenty-third dog was a yellow lab, just as annoying as the black labs. She tasted copper as the dog's knot bashed her bottom lip into her front teeth, and then tasted salt as it filled her mouth.
The twenty-fourth dog was a rotweiller. He had a hair trigger. Sweetie Belle felt ice shards in her stomach as she let jizz spill from her lips for the first time.
A jeer came from the stallions surrounding her.
"You know what this means, slut..."
Sweetie Belle said nothing as the stallion hauled her up and forced the tip of his half-hard dick between her lips. She knew well enough to stay still and gently suckle it. The blast of hot piss that flooded her mouth made her cheeks bulge out in an instant. Her throat worked furiously to swallow it down, but she couldn't stop a few spurts from spilling past her lips. Her captors didn't care, really. They had known she would spill something from the start; it was nothing but an excuse to sabotage her efforts and then blame her for failing.
The stallion released her, and she stood on shaky legs as she took in deep, careful breaths. The brackish, musky taste of piss lingered in her mouth, but it was if anything an improvement over the taste of dog cum. No, what really strained her was the sheer volume of it. After twenty-five dogs and a full pint of piss, her belly felt painfully swollen, and only sheer physical effort could stop her muscles from purging everything.
"You've got seventy-five dogs left, lady," said the stallion as he shook the last few drops of piss onto her head. "You've been here a few times and you seem to just give up and let it happen, so here's some extra incentive: when there's thirty dogs left, we'll let your two friends match you suck-for-suck. If they're as slutty as you, well, I'm sure the last thirty dogs will be a breeze!"
The other stallions laughed and jeered words of encouragement. Sweetie Belle felt nothing. His proposal didn't even rise to the level of false hope. It didn't even need to be a cruel lie, like the promise of release was, because there was no possible way that even on her best day, that she could drink that much cum without being sick.
They made her blow a greyhound, a nervous twitchy thing that she had to crane her neck downwards to reach. It quickly filled her mouth with the worst-tasting jizz she'd had so far, just pure bitterness with a concentrated piss musk that ripped through all of her senses.
She started dry-heaving. The stallions whooped and jeered in anticipation, rapidly making bets as cameras flashed all around her. She was still dry-heaving when they brought the next dog.
"Tell you what," said the stallion, "you wrap your lips around number thirty, just three more dogs, and we'll get hot food for you and your friends. No tricks, no watching us jizz and piss all over it, we'll give you three a takeout menu and you can order whatever, on us. We'll even let you out of your sleeping area to eat it."
She breathed hard, her eyes unfocused. She couldn't tell if he was lying. It wouldn't hurt to find out. Three more dogs. Just had to do three more dogs.
They brought over a doberman, number twenty-seven. She couldn't even smell it now. Open mouth, dick on her tongue, suck, suck, and wait for the swallow.
As she sucked the red cock into her mouth, she felt something strange on her top lip. Her sinuses were burning and she couldn't breathe. Cum-vomit was shooting from her nose onto the cock. Her eyes went wide, and then the cock slipped from her mouth, pushed by a torrent of cum and piss as she threw up.
The mess was horribly thick, burbling out of her mouth into a pile on the floor. Noise felt like she was hearing it underwater, the laughter, the bets, the spite.
She threw up until she could breathe again, and feel the tears running down her cheek. The stallion was tutting at her.
"Alright slut, you missed your shot. I was actually hoping you'd make it to thirty, y'know? You've been so entertaining that me and the guys were looking forward to doing something nice for you. Well, I'll tell you what: the offer stands for tomorrow. Now we just have to deal with all the poor, pent-up mutts you were too lazy to help tonight..."