Dragon Pipes

by Lighttone GryphonStar

Rating: mature
Tags: My Little Pony: Friendship is Magic, Porn, Spike, Random, Sex, Dr. Fauna, Anthro
Length: 5070

Spike's grown into a strong adult dragon. However, lately, he's been spending hours just going to the bathroom and Twilight is getting concerned, taking him to Dr. Fauna for a quick check-up. She assures the princess it's simply a plumbing problem.

Spike's grown into a strong adult dragon. However, lately, he's been spending hours just going to the bathroom and Twilight is getting concerned, taking him to Dr. Fauna for a quick check-up. She assures the princess it's simply a plumbing problem... And quickly shoves the princess out of the room to help this handsome dragon with his problem.

Warning: Slight bondage, Double Penises, Blowjob, Boobjob, Double-Cock worship, 69, Pussy/Anal sex, Cumshot, Creampie, Mindbreak

Published 2024-08-13 18:40:00 UTC
Last updated 2024-08-13 18:40:00 UTC

"I just need to clear out some blockage."

Spike and Twilight arrived at the veterinarian's office late at night. The princess and the dragon were wearing warm jackets as the cold winter wind howled outside the windows, snow flurries drifting lazily in the air. Twilight had a look of concern written all over her face. None of it had to do with the strong weather and everything to do with her most loyal assistant, Spike. They had worked well together for years, but ever since he shed into his adult scales, the dragon had been very distracted lately.

"You don't think there's something wrong with me, do you?" Spike crawled over her and opened the door. He had already become twice her height and length, and his muscles were clearly defined by how he moved. "I mean, I know I've been feeling strange for the past week, but I haven't done anything different..."

"Spike!" The princess pleaded with her assistant. "You've been spending hours in just the bathroom alone. I think it's about time we had Dr. Fauna take a look at you." She held the door open for him and he walked in. "It could be an infection?"

"What?!" The dragon jumped up, his wings pulled inward. "I don't trust that mare... Why can't you take me to a real doctor?! This one always looks at me rather privately."

"Doctors are supposed to inspect everything!" Twilight laughed at the blush on his face. "Dr. Fauna is a veterinarian, therefore she has more experience outside the pony species." She sat down at the front desk and picked up a clipboard.

"Fine..." Spike rolled his eyes and looked over the form while she filled it out. Realizing this wasn't the same form as previous visits, he asked about a curious new line "What does 'sexually active' mean?"

Twilight's hoof froze on the pen, and she felt the heat rising on her face. She quickly wrote a zero and rolled away from him, to prevent him from seeing more. "That is nothing you need to worry about," she stated plainly and simply.

The dragon shrugged his shoulders and leaned back on the chair. He stared at the ceiling, wondering what he would do for the rest of the night. Maybe he could go to Sugarcube Corner after this, even see Rarity. His mind drifted on the image of that mare for a solid moment, shaking away any thoughts of food or tracking the time. His muscles tensed and a small burn began to travel down his belly. It returned again, a sudden desire to rush to the bathroom.

"Spike?" Twilight noticed his expression change and the way his claws dug into the cushion. "No, can't you hold it until we figure out the problem first?!" She gestured to his shaking legs.

"I'm sorry, Twilight..." The dragon shivered as his breathing grew shorter. He tried to think of something else, anything but the visage of Rarity wouldn't fade. The mere sight of her walking by, swinging her hips at him, dipping down to pick something up, and giving him a full shot of her cleavage. He slapped the chair and stood up, rushing to the bathroom before Twilight could stop him.

However, the worst thing yet was the door locked. The only other bathroom in the doctor's office. Both of them started to panic, the pressure inside his gut was becoming too much. He tried to keep it in, but his body wasn't cooperating. His eyes winced tight as it began to crest out of his pocket.

"Spike!" A soft voice called out from the Doctor's door, luring him and Twilight inside. The randomness of the moment was enough to clear the visage of Rarity from his mind and sheath himself back inside.

"Oh thank goodness!" Twilight rushed over to the door and the dragon followed after her, closing the door behind him. "This is an emergency! My assistant is having trouble--" She stopped upon seeing the veterinarian nowhere in sight. Her eyes darted around the empty room and the two of them walked further inside.

Spike stopped in his tracks, a strong smell hitting his nostrils. It was a completely unfamiliar smell, but he couldn't stop his body from reacting. The dragon felt the urge to find the source and let out a loud hiss, startling the princess.

"Spike, please..." She groaned and rubbed her temple.

"S-Sorry, Twilight!" He turned to apologize and his nose bumped right into the door.

"Ah! Oh, it's okay." Twilight wrapped him in a spell and floated him onto the table. "Just sit there, I'll wait here." She took a seat in the nearby chair.

"Um... I don't know how long this is going to take, so maybe you should come back later?" Spike fidgeted with his hands.

"What? Spike, that's ridiculous. I can't leave you alone in this place." The princess sat back and closed her eyes. "You're going to have to get over it. Whatever this problem is." She waved her hand at him as if shewing the problem away. "Just try not to think about it."

The dragon swallowed hard and took a few deep breaths, his mind already focused on the strange scent. Maybe it could help him clear his thoughts of Rarity, Gabby, Ember, Smolder, or any other female for that matter. Sure he had a few times where the visage of Thorax or Big Mac appeared, but they were twisted into a feminine shape each time too. He thought it was rather strange why the image of large hips, bouncing chest peering over, or even the rare chance of a cute yet slightly mature face would send him racing to the bathroom.

Soon enough another door opened, and the strange smell intensified. Their attention was drawn to Dr. Fauna arriving, both shaken by her strange attire. A bright corset and string lace, her back completely exposed and her ass peaking out just as bold red leggings and topped off with her chest, deep cleavage on full display. All of it was quickly hidden as she covered herself in a lab coat. "Sorry, I just came back from my other job." She giggled nervously and brushed her bangs from her face and back into a ponytail.

"Um..." Spike blushed deeply and cleared his throat, trying to act like he didn't see a thing. "Yeah, I'm just here for a check-up." He made it sound so simple and quick as he no longer wanted to be here.

"It's alright, dear." She approached him slowly in her high heels, clearing her breath until his movement was less akin to Rarity and more professional. "So what seems to be the problem?" She took the file out of Twilight's hands and looked over the details. "You've been in the bathroom a lot more lately." She sat down on a stool, a little too close to the dragon. "Ever since you became an adult... adult dragon." Did she just lick her lips at him?!

Spike nodded and leaned back on the table, a little more than uncomfortable. Now he was certain the smell was coming from her. But this close it didn't smell like perfume at all. "Yes... It keeps happening... It keeps happening..." He turned away, while her lab coat was fully buttoned up, this close still gave him a prime view of her cleavage. His heart raced, his face grew hot and his claws gripped the table.

"Spike!" Twilight stepped off the chair and approached them. "Just tell her what's wrong? She'll understand."

"Exactly!" Dr. Fauna laughed out loud to cut the tension. "I've studied all kinds of text on dragons." She stopped and shivered abruptly. "But I've never had the chance to examine an adult dragon up close." She leaned in closer to him. "I mean, if you'd like..."

Spike turned his head, unable to stop his eyes from gazing down. The scent of something around her body grew stronger, it seemed to be luring his eyes lower and lower. Was it coming from her rear? The dragon winced and nodded his head. "Do whatever you like? Just help me with this problem?!" He growled and groaned.

"Good!" Doctor Fauna clapped her hands together and turned back to Twilight. "Now, if you... the owner would wait outside for a few minutes."

"Owner?" Twilight raised an eyebrow, almost offended by the word choice. "He is my assistant?!" She was stopped as Dr. Fauna snapped her fingers. A few strong and sturdy male nurses ran inside and picked the princess up.

"Please, don't make this harder than this has to be." The veterinarian swiveled around in her chair and spoke with utter confidence. "It's simply a plumbing problem. A bit of a blockage that needs to be cleared out." She shewed the princess away. "Nothing you need to concern yourself with."

"Are you sure?" Twilight struggled in the incredible grip of the stallion nurses, blushing as they lifted her up with such ease. "I mean, if Spike needs someone to watch over him, I'm more than willing."

"No, I can handle him completely on my own." With that final word, her workers took Twilight away. Dr. Fauna stood up and gave another clap while walking over to the door to lock it. After this, she turned to a button nearby and pressed it firmly. A soft buzzing sound echoed around the room. "No, that pecky alicorn won't hear a thing."

Spike shivered as the table he was sitting on suddenly shifted and turned into some sort of medical bed large enough to hold him with ease. There were restraints along the bottom and top that were currently not used. He glanced around, not understanding what was going on, even as she strapped down his legs first. "What is happening right now?"

"Just lean back and relax..." She went for his hands, wrapping them just as tightly. The mare stood up and began to undo the buttons on her lab coat, exposing the bold red corset and leggings underneath. "I'm very glad we caught you today, Spike. Had you waited too long, you might have injured yourself."

"I'm sorry..." The dragon blushed as his eyes locked on the way her body swayed left and right, his heart racing and a burning sensation coursing through his body. Watching her throw the lab coat over the chair and strut her body at him was only making it worse. "What's happening to me?" He whined, feeling an intense inch around his pocket. "I think... I think I need to go to the bathroom." He struggled as her hands moved down his belly.

"No, stay!" She assured him. "I need to examine... them." The veterinarian blushed just as bright as him upon the bumps growing around the pocket's edge. "I've read so many books on them..." Her voice was practically shivering with her lips as she stopped her hands at the base of the pocket.

Spike winced and groaned, the odd inch was so unbearable. He tried to pull away, but her grip was strong. His feet curled as his eyes watered from the pain.

"Shh... Shh, it's okay..." Dr. Fauna's soft words soothed him. Dropping her softer hands over the base too brought out a new sensation. All control and willpower went out the window as both his large dragon cocks sheathed outward with such speed that they slapped her hands out of the way. They both throbbed and grew so stiff by the second.

"What are you doing?!" The dragon struggled and growled at her, as her delicate fingers explored the shapes.

"Incredible..." Dr. Fauna's jaw hinged back out of shock alone. "Those books give them no true justice, these beastly prizes are more magnificent than I ever could have imagined." She examined each one's unique shape. The top was the longest by five more inches over the bottom one, with a wide base built more like a dog and a jagged tip. From what she read; this was designed to block the entrance of a female, and lock them together. The bottom one was far from small either, twice as thick overall, with bumps on all four sides and a very narrow base giving the whole shape the appearance akin to a butt plug.

"Please... stop... touching them!" Spike shivered and groaned, his legs struggled in the restraints. "Something is very wrong here." He couldn't get over the soft feeling of her hands and fingers gliding over them. A tingling sensation was rushing up his spine, causing the rest of his muscles to tense. "This feels so different from the inch..."

"And that's bad how?" She smiled at his reactions, leaning her body closer and bouncing her chest up and down. The smell was radiating from her body, growing stronger and stronger with each passing moment. "I know I can fix your little problem." She licked her lips, her mouth watering over the sight. "I'm the only one who possibly understood what this feeling is in most animals."

"What does that even mean?" Spike groaned and growled. "I don't feel any better, if anything this is just getting worse!" His body burned and the ache in his belly grew deeper.

"But that's not pain, right?" She raised an eyebrow and wrapped one hand firmly over the top one while tracing her fingers over the bottom one. "If I were to do something like this..." Dr. Fauna began stroking his top dragon cock, moving her hand in a smooth motion and feeling the member pulsating in her palm. "Yes, you're loving this reaction."

"I am?" Spike shuttered as a strange pleasure rushed through his body. Yes. that was the best way he could describe it. Pleasure. This was the new source of the burning and the tingling sensation very different from the previous inch. It was much more enjoyable and intense than what he could describe.

"Just lean back and enjoy... Like all the pets I help with this problem." She opened her mouth and slipped the edge past her lips. The taste was far beyond what she could imagine. Her tongue danced along the edges and her lips wrapped tighter over the long shape. The mare's head bobbed up and down, her chin dripping with saliva.

Spike shivered and felt his wings stretch out. His body was reacting all on its own, his eyes focused on the sight of her lips slipping along the shaft and her head moving up and down. A heat coursed through his body, sending an electric shock up his spine and back down again. His hips bucked and thrust up into her face.

Doctor Fauna laughed out loud and stopped sucking. Lifting her head off the cock and winked at him, leaning away to lick the tip of the bottom one. "You're so cute, Spike." She stopped from sucking it too as a better idea popped into her brain.

"Don't stop now!" The dragon whined, his muscles were tense and shaking. "I don't care anymore! Just make this feeling go away!"

"Oh, you going to love this!" The veterinarian grabbed a nearby crack and yanked it back and forth hard. This lowered the table enough to allow her to crawl over the top of Spike. She pinched his cheeks back and overlooked all his sharp fangs, the sight making her rear shiver with delight. "Yes, those will do perfectly. Flipping her whole body around, she lined her chest and mouth with his two penises again. However, that wasn't what drew his full attention, instead, it was the bold and shocking fact that under her corset's skirt, she wasn't wearing any coverage at all.

"What are you doing?" The dragon stared at the exposed pussy, the smell was so intense now that he was certain this was the source. "What is that smell?"

"Oh, you can smell it, I was curious about that detail in the books." She leaned over, letting the whiff fill his nostrils. "You see my second job is prostituting this incredible body of mine to the finest and strongest stallions. The reason I was late is that I was getting double-teamed by a couple of Applejack's farmhands." She gave an auditable moan at the memory of their rough play. "I'm hoping a dragon like you can break me even harder than them!!"

"Break you?!" Spike shook his head. "Wait, wait, wait, what are you talking about--" He was silent as her pussy pressed firm over his mouth.

"I said, relax..." She leaned up enough and plucked off her top strings, bouncing out her breasts over the top cock while wrapping her mouth around the bottom cock. Both her hands slapped and jugged her chest up and down the top member while her mouth and tongue worked the other one.

Spike didn't know how to react. His mind was a whirlwind of emotions, pleasure, and fear. The feeling of her mouth and chest was so incredible, his body tingled and the strange feelings grew stronger. A new desire urged him out, pushing his tongue again his teeth, a yearning to taste her pussy. He couldn't explain why he felt like this, but it was a new instinct that he couldn't deny.

Dr. Fauna gasped and giggled, the sensation of his tongue brushing over her sensitive spot was beyond amazing. Her pussy was soaking wet from her previous sexual experience and she couldn't wait for him to explore and like her clean. The mare continued sucking, her chest slapping harder, driving his hips to buck into her mouth.

Spike moaned, his tongue slipping in deeper, exploring the walls and finding her weak spots. She screamed over his cock and pressed her breast tighter, twisting her nipples against his scales. He loved the taste of her juices; the flavor was like honey to him. He pushed and pulled his tongue around, licking her inner walls and lapping it up.

The mare's mouth tightened over his cock, and her lips smacked along the base. Her own hips were shaking back and forth, rubbing her crotch firmly against his sharp teeth. Dr. Fauna loved every inch of his tongue inside her, so much that she almost couldn't wait to have these members pumping into her either. The sheer thought urged her to pipe him faster.

The dragon felt the inch sensation return with cruel vengeance, along with a new wave of pleasure coursing through his body. His body tensed up, his claws yanked so hard again his binding that the ropes began to tear. His toes curled as his hips bucked against her face so hard that it nearly knocked her mouth off. The sensation was like a rush of energy surging through his veins, his eyes rolling back and his mind turning to mush.

Dr. Fauna knew this feeling all too well, leaning upward and taking her mouth off the bottom tip and the top of her breasts. She began to walk both in her hands alone, opening her mouth wide to the tips as they began to flare up. "Now just drain those sexy pipes, give into all those images those sexy mares always leave you with. I want to drink you down!"

Spike couldn't hold back any longer. His whole body was shaking and twitching. The pleasure and inch were driving him mad and he couldn't stop the feeling. "Whatever this is... It's here!" Hearing his warning she dropped her lips over both tips. Her mouth was stretched open wide as they exploded like a burst fire hydrant. So much dragon seed came blasting out that her cheeks filled up and began spilling over the sides.

She gagged and coughed, but quickly slurped it all up. Her eyes rolled back as the taste differed incredibly from that of a stallion. So salty, yes, but spicy and burning hot. The best thing she could describe it was white lava flowing down her throat. She kept her lips tight, not allowing any more than a drizzle to escape.

The dragon sighed in relief, the horrible inch was gone, replaced by a strange sense of relaxation. His body was still tingling and shaking, but it was so much better now. The only thing that made it better was her pussy gushing over his face seconds later.

"Wow..." Doctor Fauna sat down on his face, shivering and giggling at her climax. "Such a good dragon... You made me break much faster than those farmhands..." She lifted herself up and swiveled her hips over his belly. "You were perfect."

"That did help... a lot." Spike was too out of breath to speak further, his head spinning and his heart racing. "But... What happened? And what was that taste?"

"Your body was releasing some pent-up pressure..." She leaned forward and licked his chin. "As an adult dragon, your body is producing seed constantly." The mare laughed at the members were still firm as she dropped her hips closer. "Being around so many sexy mares like the main six must leave you with such a massive ache."

"Yes..." The dragon admitted, gaining back his voice after a few minutes. "There's also Gabby, Smolder, Ember, and even Thorax has given me the inching sensation. It was driving me crazy."

"It's completely natural, Spike." Dr. Fauna slid her pussy lips over the top member, biting her lips and moaning at the length alone. "A dragon's sex drive is very high. Truthfully, I'm surprised you were still a virgin after so long." Her eyes widened as the top member entered her pussy without any prodding. "To think that sexy Rarity never got the chance to feel this inside her!!" She screamed the last bits of the line, feeling it pull apart her walls with ease. Sliding down until she felt the bottom one slap against her anus. "Yes, I want to feel both!" She sat up and dropped her hands over her ass, spreading the cheeks and allowing the bumpy butt plug-like cock to enter her too.

"Rarity is too much of a gentlemare to--" The dragon moaned and shivered, the feeling was the intensity of her pussy walls clamping down. His body was burning again, his scales growing hotter and hotter as the anus did the same to the lower member. It locked his hips in place, giving her complete control over both.

"She's a fool! All those mares are fools for not taking you when they had the chance!!" The veterinarian slammed her hips up and down, gasping and shivering. Her tongue hung out and her breasts bounced along with her corset. The sight of them was a first for Spike too, such perfect orbs yearned him to lean up and take a bite, but the binds kept him in place. He could only watch her move up and down, his whole body reacting to her.

Spike couldn't keep the moan from escaping his lips, his voice was cracking. Every nerve was on fire and his mind was melting. He felt her hips drop hard, and both members slid into her deeper, the tips reaching a wall. A spark of pleasure shot up his spine, making his jaw drop and drool drip. A strange hunger rose in his belly, a deep and carnal replacing all his mental faculties.

"Yesss! I can feel the real dragon inside you rising to the surface, Spike!" Dr. Fauna gasped as his hips began to thrust into her again, with the same force as he did her face previously. However, this time there was greater direction in each plunge. They were so focused, powerful, and precise. Her whole body shook and the mare screamed.

The dragon was lost in his instinct, growling and yanking at his binds. His jaws snapped back and his neck wrenched upward. The wings flapped so hard, blasting air over her sweating body. The hunger was overwhelming, the sight of her beautiful face twisted in ecstasy made him crave something his mind never once considered at all.

Dr. Fauna gasped and moaned louder, her voice rising and falling with his hips. She couldn't stop herself from laughing and smiling, the whole experience was more intense than anything she had ever done. The long length seemed shivered and twisted inside her pussy like a worm searching for a meal. The bumpy shaft was twisting inside her anus, while the other one was pushing into her deepest walls. "You want me so bad, you want to break my holes! You can do it, Spike, let that hunger loose and ravage me!"

The dragon growled and foam rose forth, it destroyed all his words. Only grunts and groans escaped his lips as the pleasure built up, and the hunger grew deeper. His whole body tensed, his mind was racing, and the pleasure was growing once more. His toes curled, his legs pulled against the binds, and his wings stretched out. Every fiber of his being was on fire and his breath was caught in his lungs.

"I can feel your hunger, Spike!" Doctor Fauna's head flung back and her body shook, the sensation of his top cock pulsating inside her and his lower one swelling up was driving her mad. She dropped her hips down to the base, wanting to feel the wide brim destroy her hood. "Please Spike... breed me!!"

This was the final straw. This one word, this simple, little word that he heard her say was his limit. Spike roared, his hips bucked and slammed his tips into her deepest parts. Her voice cried out and echoed in the room, followed by a torrent of hot seed bursting inside her pussy and anal chamber. The veterinarian screamed so loud this time and fell backward, her body twitched and her mind went blank.

The two froze as the dragon's seed pumped inside her body. She could feel it pouring into her, the hot white lava spreading deep and filling her to the brim. The sensation made her climax again, her hips squirmed and her pussy quivered. Her body shook and she couldn't stop herself from shuttering in utter bliss.

A minute passed before her mind returned to reality. She opened her eyes and stared up at the ceiling. "Wow... That was..." The dragon didn't reply to her once, simply receding his members from her as his eyelids slowly closed. "Oh, my poor dragon, you must be exhausted after such a draining experience." She giggled and slowly popped herself off the two members. Just as she thought, they were like perfect plugs, leaving her gushing white over the table.

The mare smiled and leaned close to his face, kissing his cheeks. "Thank you, Spike. For a wonderful first experience." She lifted herself off the table, her whole body shivering and her knees buckling. Slowly she drifted over to the intercom at the other side of the room. Her plan was to give him a quick shower and then send him home with his owner.

However, unknown to her something had sparked inside the dragon's brain. Once she turned away to her destination, his eyes popped back open again. The irises widened to the point that there was no more white in his eyes. He lifted his arms and legs as the restraints broke with such ease. His muscles pulsed and his body stretched outward.

"Spike... be a good dragon and go walk into the shower room." Dr. Fauna's ears twitched as she picked up a sound. She was in such a half daze that the panic never fully settled in even as his larger shadow overcast her and the intercom. Instead, her body just went back to the plan, pressing the button carefully and speaking clearly at first. "Princess Twilight Sparkle, your pet dragon--"

A loud screech stopped her well-prepared speech as the dragon claws dug into her hips and pushed her body down. Her eyes widened and her jaw gritted hard upon feeling far bigger members smash hard into her pussy and anus again. The flipped position forced the long one into her anus and the bumpy one into her pussy.

"Spike!!" The mare screamed out loud and her body jolted, the shock sent her whole body shaking. Her breasts bounced up and her corset flipped off from the rough movements. His teeth dripped saliva down her back as the fangs bared and ripped off the corset with ease. "You're so strong, so powerful..." Her pussy and anus were ravaged without regard.

"Yes, Dr. Fauna," Twilight's voice replied into the room's speaker. "I didn't catch that last part. There was so much static."

"Oh... sorry!" Each hard fuck left her utterly breathless. "You're pet dragon... needs to stay overnight."

"Are you sure? You know I don't mind taking him back--"

"I insist!" Dr. Fauna fought her hardest to hold back her screams. "It's really for the best! He needs to stay here... I need to make sure his pipes are... very empty! She moaned so hard at that last line before cutting the feed. This was solely to hide her lust and pain, these cocks were far greater than any stallion she ever had inside her. And this dragon was ramming into her like a jackhammer.

Spike didn't understand his actions anymore. His mind was blank, his only desire was to breed this mare echoed through each action. His hips buried her against the wall so hard. His tongue slithered out around her throat, the forked tip finding the breasts and nipples. Lifting her like his own personal fuck toy, the dragon pounded her faster.

Dr. Fauna gasped, the sensation of his tongue licking her skin. The rough texture made her whole body quiver. A quick and shuttering sensation as the edges dug into his nipples, sipping out her milk. She couldn't deny how incredible the sensation was. Every nerve was on fire, the rough plunges were tearing her apart. The mare couldn't breathe, the sensations were just too great.

His claws gripped her hips tight, and her feet dangled a few inches off the ground. Her crotch dropped straight down onto the base of each cock. "Spike!!" Her eyes widened as her mind began to shut down. The sensation of his tips hitting her womb broke her utterly and completely. Her body went limp and her eyelids dripped close. Consciousness faded from her as the only sensation left was his body fucking into her over and over and over.

******