CONTENT WARNING: SCAT

"Happy birthday, Marshall! You're a year older, and a year stronger!" Said Ryder, offering cheers to his faithful dog companion

"Thanks, Ryder. And thanks for throwing such a great party!!" Replied Marshall.

The anthropomorphic dalmatian was already enjoying the evening, and it had barely begun. His birthday party, taking place in the upgraded lookout tower, was something they'd all been looking forward to for the longest time, and with good reason.

The food was amazing, curtesy of Mr Porter's amazing ingredients and recipes. Katie's games were a blast, and they had only played a couple of them so far. Rubble's music was kickass, as his DJ skills had improved a whole lot since he started practising regularly.

Everything was all well and good so far, and they all loved every moment they spent in the lookout's main meeting room, decked out for the special occassion.

But Marshall was waiting for HIS guest of honor to arrive.

Suddenly, there was a knock at the door. Marshall quickly got up and opened it, greeted by the pup he loved.

"Hi, Marshall. Sorry I'm late," said Everest.

"It's alright. Come on in!" replied Marshall, who was thrilled to see her.

The party continued, and everyone had a great time. There were lots of laughs, jokes, and games. But, as the night progressed, Marshall was starting to get certain thoughts, namely about Everest.

Getting a healthy glance at her giant backside every chance he got didn't help much to alleviate those thoughts. Even in her trackies, her could practically see how enormous those plump cheeks were.

How she managed to be blessed with such big cheeks was anyone's guess, but Marshall really didn't care. He just wanted her.

Marshall was trying his hardest not to make his erection noticeable, but he knew that he would soon have to give in to his urges.

He looked around the room and saw that everyone was having fun, trying to get his mind off her.

"Hey, Marshall. Are you ok?" asked Ryder.

"I'm fine, Ryder. Just a little tired," replied Marshall, trying to keep a straight face.

"Well, nobody would blame you if you wanted to hit the hay. You're probably exhausted from all of the activities, and you've been busy with that new workout routine that Chase showed you this week." said Ryder.

"Yeah, true. Thanks, Ryder." replied Marshall, relieved to be excused.

With that, Marshall walked towards his room, his erection still prominent. But as he got inside and flicked the light on, his mind still only had one thing on it.

He tried to close the door behind him, but for some reason, it wouldn't budge. He turned around and saw a certain big-ass husky facing him.

"Hey, Marshall." She said.

"H-Hi, Everest. How are you?" asked Marshall, a little startled.

"I'm good, but you seem like you need some company." Said Everest with a raised eyebrow.

"W-What do you mean?" The dalmatian asked, stammering a bit.

"I think you know exactly what I mean, Marshall," replied Everest, smirking at his erection through his pants, making him feel flustered.

"Well, uh, I..." He tried to think of something to say to change the subject/defend himself.

"I know what you were about to do up here, Marshall. And I have a pretty good idea what you would be thinking about as you did." She added with a wink.

"Um... well..."

Everest walked towards him and put her paws around him. "Come on, Marshall. You can admit it."

"I, uh..."

"I can tell you want it. It's all you can think about." said Everest, whispering in his ear. "It's my butt, isn't it?"

Marshall didn't say anything, but his body was betraying him.

"It's okay, Marshall. I've noticed the way you look at me, and I don't mind." She added, fluttering her eyelids at him.

"Everest, I don't know what to say," said Marshall, still not able to admit the lewd thoughts he was having about the gorgeous husky.

"Say yes, Marshall. Say yes, and I'll help you."

Marshall thought about it for a moment. She already knew about it, they were in his room away from everyone else, and she seemed like she was up for it.

He couldn't resist anymore. He didn't have a reason to.

"Okay, Everest. I admit it... I love you... And your huge butt." He admitted with a blush running across his normally white face.

She smiled lovingly into his eyes at the confession, pressing her head onto his.

"I love you, too, Marshall. Now, let's [i]really[/i] get this party started," Replied Everest.

They locked their muzzles together, kissing passionately, much to his surprise.

The kiss lasted about 10 seconds, before they broke it off.

"Wow, Everest. You really don't mind me admiring your rear end so much?" He asked, shocked to hear that she didn't take offence to his perverting habits.

"Of course not, Marshall. In fact, I like it," She replied.

"Really? How much?" He asked.

"Well, I'm not going to lie; I LOVE having my butt stared at, but you seem to like it more than most."

To illustrate her point, Everest let go of him and made her way to the window before she turned around, with something naughty in mind.

She pulled her trackpants and blue panties down, revealing her big, soft, plump ass, with a circle of white fur spread across the middle.

Marshall's jaw dropped, and his cock throbbed against his pants, even though he couldn't see the beautiful sight of her butt himself yet.

Everest proceeded to slam her bottom against the window, moving it back and forth to gather as much attention from outside as possible, so that everyone could see her mooning them.

How Marshall envied that lucky window...

"There." The naughty husky began with a cheeky grin. "Does this give you an idea?"

"Y-Yeah.." Marshall said, stunned at the view of what she was doing.

"I'm glad you like it."

Without even bothering to pull her pants back up, Everest came back to him on the bed.

"You want me, don't you?" She asked.

"Yes, Everest, I want you. I've never wanted anything more in my life," Replied Marshall.

"Well, good, because I'm going to make you beg for it," She told him, suddenly taking on a more serious tone. "You're mine for the rest of the night. You're gonna be a good puppy and do exactly as I tell you, okay?"

"Anything you want, Everest." He agreed, almost immediately bowing to her authority. "Anything,"

Everest smiled and issued her first order.

"Take it off. All of it."

"Yes, Ma'am!" Replied Marshall, beginning to undress himself.

After a few seconds, he was completely naked, save for his red collar, which was the only thing he was allowed to keep on.

"Oh, wow. You are a lot bigger than I thought," Said Everest, looking down at his rock hard member, "Good, I like that."

"Thank you, Everest."

"Now then..." She said, as she sat down and patted her lap. "Come here, Marshall."

"Y-Yes, Ma'am,"

He was a little confused at first, but then realised what she wanted him to do. He crawled over to her, and she grabbed him and pulled him over her legs.

She then gave his bottom a firm slap.

"Ah!" Cried out Marshall, as he felt the sting of her paw on his backside.

"Shhh, just relax, Marshall," She said. "This will only hurt for a second, and then you'll feel a lot better."

She spanked him again, this time a little harder, and he winced, but stayed quiet.

"We!" She said in an authoritative tone as she smack him again. "Do!"

Another spank.

"Not!" She continued, spanking him once in between words.

Marshall had to admit, she was way stronger than she looked.

"Try! To! Perv! At! Ladies'! Bottoms!" She yelled, continuing to spank him with each word.

By now, his butt was bright red and was starting to burn. But, to his own surprise, he was starting to enjoy the sensation.

"Ahhhh! S-sorry, Everest!" he moaned.

"Shhhh, just take it like a good pup," she replied.

Finally, after several more slaps, Everest stopped and gave his rear a little rub, soothing his burning bright red cheeks.

"See, that wasn't so bad, was it?"

"N-No, Ma'am," replied Marshall.

"I'm glad you enjoyed it. Because now you're going to do the same for me."

"B-but, I thought you were in charge?" he asked.

"Well, yeah. But I want you to spank me too, Marshall," she replied. "Don't worry, it won't hurt me. It might sting a bit, but it's not the same as your little butt."

"O-Okay. Whatever you want, Everest."

"Good boy. Now, sit up~" she instructed.

"Yes, Ma'am."

Marshall sat up, and Everest moved her trackpants down to her ankles. She then bent over his lap and stuck her huge rear end out.

"Go ahead, spank me," she commanded.

"Yes, Ma'am," he replied, not knowing exactly what to do.

He raised his paw and gave her bottom a light smack.

Her butt wobbled like jelly as he struck it, and he could tell it didn't hurt at all.

"Good, but try again," she instructed.

Marshall tried again, giving her a little more force this time. Her butt shook even more, and he could see the impact had left a mark on her soft flesh. Yet she remained unfazed.

"That's a good boy. Keep going," she urged.

He continued to spank her, getting bolder and bolder each time, and she giggled and moaned in delight, enjoying every second of the spanking.

No matter how hard was spanked her, even if it was loud that the neighbor from 10 houses down could hear them, he was doing absolutely 0 harm to her.

"Mmmm, yeeeessss, Marshall, just like that~" She purred, enjoying every second of her fat rear end jiggling over his lap

"O-Okay, Everest," He replied, nervously panting.

He continued to spank her for several minutes, and she continued to moan and giggle, loving the feeling of his paws on her bottom.

After a while, she decided to stop him.

"Okay, that's enough. That was great, Marshall," She said, standing up and pulling her trackpants back up.

"Yeah... Sure was..." He panted.

"Hope you enjoyed it." She began, as she bumped him with her bountiful bum, knocking him on his back. "Because that's the only time you're gonna be in charge tonight. Underatand?"

"Yes, Everest. Whatever you want."

"Good boy."

Everest then got on top of him, straddling his hips. She rubbed her clothed crotch against his bare shaft, teasing him, before she reached her paws underneath herself and removed her trackpants and panties in a smooth motion, her large, round and fat bottom bouncing up and down, the view driving him wild.

"Mmm, you like this, huh?"

"Yes, Everest, I love it," replied Marshall.

"Good. Kiss it."

"K-kiss it?"

"Yes, Marshall. Kiss my bottom," she replied.

He was hesitant at first, but couldn't resist her commands. He leaned forward and pressed his muzzle against her butt, feeling her hand push him gently into it.

"Good boy. Now, lick it," she commanded.

Marshall licked her butt, slowly and carefully at first, and then faster and harder, as she encouraged him to keep going.

"Yes, Marshall, that's it. Mmm, just like that."

"How are you enjoying that, Marshall?" she asked.

"A-Amazing, Everest," he replied.

"Well, I'm glad you like it, because we're not done yet."

"Not done?"

"No, silly. We haven't even gotten to the good part yet," she replied, grinning.

"T-the good part?"

"Yes, Marshall. First, breath out, right in my bum."

"Huh?"

"You heard me, Marshall. Do as I say," she commanded.

He followed her command, breathing out as hard as he could, straight into her ass.

"Mmmm, yes, just like that, Marshall. Now, count to 5, then take a deep breath in."

"W-what?"

"Just do it, Marshall," she replied.

"1, 2, 3, 4, 5..."

Marshall breathed in as hard as he could, trying not to inhale anything except air.

Unfortunately for him, she had other, more immature plans for him. As soon as he reached five, Everest let out a kind of air of her own, right in his muzzle.

Marshall's eyes widened as soon as he heard the sound of the rancid excess air escaping from the center of her glorious rotund cheeks, and as soon as the smell hit his nose the moment he inhaled, a renewed surge of submission coursed through his mind.

"Bwahahahaha!" Everest hearty laughed at her dominating prank, before she looked back to see her toy's face "What's the matter, Marshall? Cat got your tongue?"

Marshall coughed and gagged, unable to breathe or speak for the moment.

"Come on, it doesn't smell THAT bad!" She teased, still giggling at his reaction to her fart.

Truth be told, it smelt like liver and onions, just really foul. Given Everest's diet, that shouldn't have been a surprise, really.

Still, even if Marshall HAD hated this with all her being, which he didn't, he would never complain about it to his new mistress.

Marshall coughed a few more times before finally regaining his composure.

"Y-Yes, Ma'am. May I have another?" He politely asked, trying not to instinctively waft the smell away from him.

"Well, since you asked so nicely, sure, why not?"

"Thank you, Ma'am."

He was already regretting that, but if it made Everest smile, then he'd happily smell the contents of her bowels straight from the source all she wanted him to.

"Go on, breathe out," She commanded with a sly grin.

Marshall complied, breathing out hard once again, straight into her backside.

"Mmm, that felt good~" She murmered, before she looked back at him. "Now, deep breath one more time."

Marshall breathed in a second time, and Everest let out another fart, right into his muzzle.

"Bwaahaha! Enjoy that, Marshall? Do my farts make you happy?"

Marshall was about to reply, but then Everest did something very unexpected. She grabbed her giant booty and spread her cheeks apart, revealing her puckered, pink anal hole.

"What are you-?" He asked, struggling to breathe for a second

"Shhh, just go with it, Marshall."

Everest moved her hips closer to him, pushing her anus up to his muzzle.

"Breathe in it, big boy." The husky instructed, biting her lower lip.

Marshall breathed, blowing his hot breath into her anus, and she shivered in pleasure.

"Ahh, yeah..." She purred, loving the feeling of his hot breath in her asshole. "Go ahead, push harder."

"Huh?"

"Do as I say, Marshall."

Marshall pushed his muzzle further into her butt, and she moaned and giggled.

"Oooh, yeeeesss, Marshall, just like that," She sighed happily, wanting to see how far she could go with this. Or rather, how far HE could go. "Ahhh, Marshall, you're such a good boy. Keep going."

Marshall pushed even further, and she moaned louder, clearly enjoying the sensation of penetration.

She could feel a big one coming, and he was right where he wanted her.

With how far in his muzzle was, there was no way the fart was going anywhere but his lungs.

"Ahh, here it comes, Marshall!"

Everest held nothing back as she let loose, farting in his muzzle for 10 long seconds.

Marshall couldn't believe it. He was breathing in something really unhealthy, yet there was nowhere else he'd rather be.

"How do you like that, Marshall?" Everest asked, panting. "You like my gas?"

"Y-Yes, Ma'am, I love it," Replied Marshall, not even sure how he was still conscious at this point.

"Good. I have one more special surprise for you~" She said, with a smirk.

"S-Special surprise?"

He didn't know if he liked the sound of that or not.

"Yes, Marshall. It's your birthday, and I want to make sure you get the best gift ever."

"W-What are you talking about, Everest?"

"I'm talking about this." she said, spreading her butt cheeks once again. "This time, it's not just gas. This time, it's something even better."

His eyes went wide again, his mind swarming with what she could possibly mean.

"You'll see, Marshall. Now, open wide," His mistress commanded.

"Uh, okay," replied Marshall.

"Breath out, and hold it."

Marshall breathed out, and Everest pushed her bottom closer to his muzzle, until her anus was right against his mouth.

"Breathe in, and hold it," She commanded.

"Huh? But you just said-"

"Do as I say, Marshall."

Marshall breathed in, and Everest let loose, filling his lungs with her flatulence.

"Good, Marshall," She purred. "Ahh, mmmm, that's a good boy."

As she promised him, there was another surprise for him. This time, instead of just rotten gas, he felt something solid and slimey press against his nose.

It was the tip of a small, brown turd.

"Oh no, oh no, oh no! I didn't think that was going to happen!" He thought to himself, knowing there was nothing he could do now.

"Shhh, it's okay, Marshall. Just relax," Said Everest, as she pushed the turd out, and it plopped into his muzzle. "Mm, good catch, Marshall. Now, chew it."

Marshall did as he was told, chewing the turd slowly and carefully.

It was warm and mushy, and tasted a bit like the food from the party.

"Good boy~" She chimed, as she surprised him yet again.

As he was busy chewing the first turd, another one landed on his face.

"Now, swallow."

He swallowed the first turd, and it slid down his throat.

Then, he was about to do the same with the second.

"No." She commanded. "Pick it up."

"H-Huh?"

"Do as I say, Marshall. Pick it up," She repeated.

Marshall picked up the second turd, and looked at her, unsure of what she wanted him to do next.

"Good boy. Now, smear it on your face."

"S-Smear it?"

"Yes, Marshall. Rub it all over your face. That's what you want, isn't it?"

Marshall couldn't argue with that, regardless of if it was true or not, so he did as she told him. He smeared the second turd on his face, covering his cheeks and chin with the brown goop.

"Ah, that's a good boy. Such a dirty little pup~" She teased. "You've really enjoyed it, haven't you, Marshall? My farting, my turds, all of it."

"Y-Yes, Ma'am. I love everything you've done to me," He replied.

"Good, because there's a lot more where that came from." She teased, as she stood over him on the bed, her massive arse over his body this time. "You know, I have a pretty big load stored up, Marshall. And I have a feeling you'll be able to handle it."

"W-What do you mean, Ma'am?"

"I mean, we're gonna find out if you look better in brown!" She chuckled.

Everest then began to defecate, a steady stream of logs dropping from her rear end onto his body.

Marshall was shocked at first, but then, he began to relax and enjoy the sensation.

The warmth of the logs, and knowing where they came from, made his position enjoyable. And he didn't really mind the smell by now, either.

Knowing what she meant before, Marshall went ahead and grabbed two more handfuls, before smearing them into his chest fur, much to his mistress's delight.

"Ooh, someone's a kinky puppy," She teased.

"Sorry, Ma'am, I couldn't help myself," replied Marshall.

"That's alright, Marshall. I was hoping you would do that."

"Really?"

"Yes, Marshall. That's why I'm giving you a choice."

"A choice?"

"Yes, Marshall. Would you like to be my toilet for the rest of the night?" She asked, with a mischievous smile.

"Y-Yes, Ma'am, I'd love to." He answered without a second thought.

"Good, because that's exactly what you're going to be. Now, get ready, because this is going to be a big load," She replied.

With that, she began to shit on him once again, a torrent of logs dropping from her rear end onto his face and chest.

Marshall couldn't believe it. He was literally being turned into a toilet, as HIS birthday treat, no less, and he loved it.

She could tell her was enjoying it now, and she was enjoying herself, too. She loved dominating him, and turning him into a dirty, horny puppy.

She would have loved him to cum, but she was saving that for later. She wanted to have some more fun with him, and there was still plenty of time left in the night.

After a few minutes, she stopped pooping, and wiped her bottom with his clothes.

"That was fun, wasn't it, Marshall?"

"Y-yes, Ma'am. I loved every second of it."

"Good, because I have one more special surprise for you."

"Another surprise, Ma'am?"

"Yes, Marshall. Close your eyes," She instructed.

Marshall couldn't wait to see what it was, obeying her order.

Everest then proceeded to take a picture of him with her phone.

"Alright, you can open your eyes now, Marshall."

"What was that all about, Everest?"

"Nothing. I was just taking a picture of you."

"Why?"

"Because, silly, you're cute when you're covered in my mess." She replied, chuckling. "Like you're REALLY marked with my scent."

"O-Oh, uh, thank you, Ma'am," Replied Marshall, a little embarrassed, but flattered.

"You're welcome, cutie. Now then, since you've done such a good job tonight, it's about time you got your real treat." She teased as she spread her cheeks again, looking at his still erect cock.

"You want my butt, don't you, Marshall? You want to stick your big, throbbing bone inside of it, don't you?"

"Y-yes, Ma'am. More than anything." He answered, like he was in a trance.

"Well, you've certainly earnt it. Now, I'm gonna slam my butt on your private, then you can have me." She commanded.

"Yes, Ma'am," Replied Marshall, excited to obey her commands.

"Get ready, because here it comes," she said, as she positioned her huge butt above his shaft, then jumped and slammed down hard, the impact making his cock bounce up and down inside of her dirty tunnel.

From the sound of the slam, it was a miracle that anyone still downstairs didn't hear them.

"O-O-O-Okay," He stuttered, overwhelmed by the feeling of her plump cheeks.

"Now, you can have me. Take your time, and enjoy," She purred, as she got up and back down, each thump of her cheeks feeling as heavy as a bear on top of him.

Marshall wasted no time in thrusting his shaft inside of her, causing her to moan.

"Ahhh, M-Marshall. Y-you're so big~"

"T-thank you, Ma'am," he said, trying to maintain his composure.

"Go ahead, use me, make me your own," The husky commanded.

Without any further instruction, Marshall began to fuck her, thrusting his shaft into her butt as hard as he could.

She moaned and panted as he did so, clearly enjoying the feeling.

He continued to pound her, harder and harder, faster and faster, until they finally came.

"Ooohhhhh! Ahhh, Marshall, yes, that's a good boy, bury your bone in me!"

"Ahh, Ma'am, you're so tight, it feels so good," He groaned, as he released his seed deep inside of her.

They both came, and their bodies shuddered with pleasure.

Marshall couldn't believe how much he loved it.

The two of them stayed in position, panting from the activity, until the dominating husky looked down at her partner, another cheeky smile on her face.

"Well, was it everything you hoped for?" She asked, smiling.

"Yes, Ma'am. It was amazing. Thank you so much, Ma'am."

"You're welcome, Marshall. And now, it's time to get cleaned up."

Getting off his rod and moving herself back so that her massive ass was right above his head again, Everest leaned down so she could get her sitter above his muzzle once more and so she could access his dirty, shit-smeared penis.

He knew what she had in mind, so proceeded to licked her bottom, cleaning her hole and cheeks, tasting the last bits of the waste that she left in him.

"Ahhh, yes, Marshall, just like that," She purred. "Now, it's time for your next present."

His mind reeled with bliss when he felt something soft and wet against his member.

Even with the enormous globes of fat that Everest called her rear end, he could tell that Everest's lips wrapped around his cock, her tongue flicking at his tip.

"Ahh, Everest..." He moaned, as she sucked his shaft, deep throating him. Like everything else she tried in her life, Marshall was amazed at how incredible she was at this.

She continued to suck his shaft, moaning and giggling as she did so.

Marshall couldn't believe it. He was getting a blowjob from the gorgeous husky he adored ever since they met, and they were both loving every second of it.

After a few minutes, he couldn't hold back anymore, and came, shooting his seed into her mouth.

As he began panting from the feeling of sweet release, Everest leapt up and kissed him, getting his own semen in his mouth.

"Ahh, that was delicious, Marshall," She purred. "I can see why you ate so much of my waste."

"T-thank you, Ma'am. That was incredible."

"I'm glad you enjoyed it. Now, it's time for the final part of your reward."

"Final part, Ma'am?"

"Yes, Marshall. Come over here, and lay on your back."

"Y-yes, Ma'am," replied Marshall, complying with her order.

Everest then climbed on top of him, sitting on his face, his nose rubbing against her butt again.

"Ah, yes, that's a good boy," she said, as she stroked his head and shook her ass.

"You like that, don't you, Marshall?"

"Mmm hmm," He replied, nodding.

"You like being my toilet, don't you, Marshall?"

"Mmm hmm." He repeated.

"In that case, let's do this every time we can, forever and ever."

"Mmm hmm." He repeated again.

"Alright then, that settles it. We'll do this next Saturday, and as many more times as we can.

"Mmm hmm," He mumbled, too overwhelmed by the scent of her rear end to speak, let alone to breathe.

"Now, it's time to rest. My butt will be the last thing you see and smell tonight." She giggled, not letting him breathe until he was completely still, signifying that he had passed out.

Marshall agreed and was happy about it, trying not to thrash about from the lack of oxygen.

After a few seconds, Everest could feel his breathing slow down, and knew that he was asleep.

She moved away, and watched him for a moment. She loved the sight of him, and was glad she could give him a birthday he would never forget.

With a smile on her muzzle, she laid down next to him, and snuggled up against his side.

"Goodnight, Marshall. Happy birthday." She whispered.

And with that, she drifted off to sleep, the smile never leaving her muzzle.