As another morning dawned, Diamond Tiara was awoken by a stream of sunlight coming through her bedside window. It was a Saturday, which meant only one thing to Dimond Tiara, her father was coming home from his business trip today.

Over the course of a very pleasurable week, Diamond Tiara had been getting more and more excited for his return. She was just so excited for him to come back to both his loving daughter and the kind of wife he truly deserved. Her father had always cared so much for her personal needs, even while having to deal with Spoiled's non-stop complaining. But now that her mother followed her every command, that wouldn't be a problem anymore.

As Diamond Tiara adjusts herself in bed, working up the effort to get up, she heard the tell-tale squishes and crinkling of her diaper underneath her blanket. Yet instead of feeling annoyed or embarrassed that she had once again wet her bed, it made her smile. The idea of using her diaper on purpose had really been growing on her for the past few days, especially with Spoiled helping out.

Whipping off her covers, Diamond Tiara rolled herself out of bed. After some quick stretches and a long yawn, she exited her bedroom, half-waddling downstairs for the breakfast that her mother would already be preparing. Her soaked diaper would occasionally rub against her sensitive flanks, sending small jolts of pleasure into her body.

As she reached the bottom of the stairs Diamond was greeted by the sweet smell of freshly prepared pancakes coming from the kitchen. Poking her head around the doorway she smiled upon seeing her mother making breakfast, heavily soiled diaper hanging down between her legs. It had clearly reached full capacity and Diamond could just faintly see small brown and yellow stains on the fur going down her back legs. The surface of the padding had turned a light brownish color, a sign of just how much she had deposited in there since yesterday.

While her mother followed her every command without hesitation, Diamond Tiara still had to make sure she got to rest and had everything else she needed. They would often have meals together and talk, though lately most of their talks eventually turned into something...a bit more fun.

As Diamond Tiara reminisced about the past few days, Spoiled Rich seemed to finally notice her that daughter was standing in the doorway.

"Ah, good morning honey, did you have a good night's sleep?" She asked.

"Yep! Thanks for making breakfast again."

"But of course dear, and I see that you have been enjoying your diaper as well. I know I have~" Spoiled teased, lightly shaking her flanks and making Diamond blush at the display.

Another thing she had noticed was that ever since she had been hit by the amulet's magic, Spoiled had slowly been getting more and more...slutty, for lack of a better term. Ever since their first time, she had been really getting into the diapers as well. Diamond wasnt sure if it was actually a kink her mother secretly had before or if it was something to do with the amulet. She didn't really mind either way though.

With a nod, Diamond Tiara left her mother to the task of making breakfast and headed into the living room to relax. Hopping up into her new favorite chair by the fireplace, the wet padding of her diaper squished beneath her butt. With a content sigh, she thought her plan for today.

Diamond had been planning out her father's return for the past couple days and couldn't wait to see the happy look on his face when he saw how much Spoiled had improved. She didn't plan on telling him about the amulet's magic though, something in the back of her mind told her it was for the best if he didn't know. She had already given Spoiled very specific directions about how to act around him, making sure that she would not mention the amulet.

As the smell of pancakes grew stronger, Diamond turned to look back just as her mother entered the living room, carrying a stack of two plates, with one full of pancakes. With a loving smile, Spoiled gave Diamond her share of the pancakes before settling down in another chair which Diamond had set up next to her own. As her mother she sat down, Diamond could hear the sounds of her mother's mess squishing and spreading under her weight. Spoiled let out a pleased sigh and they started eating.

"Hey mom, have any cool dreams last night?" Diamond Tiara asked, deciding to start up some kind of conversation.

"Actually, I did. And you were in it~"

"R-really?" Diamond said in surprise. "What happened in it?" She asked, stuffing a pancake into her mouth.

"You had ordered me to go out and stand in the middle of the busy market while wearing a messy diaper." She explained.

Diamond Tiara froze, holding another pancake about halfway to her mouth, stunned by just how hot what her mother had just described sounded. Just the idea of Spoiled Rich, the infamously uptight and rude mare, standing in the middle of the ponyville market, and soiling herself for all to see, was immensely arousing.

If had been the first day since she had used the amulet, Diamond would probably have made her do just that. But now, while she certainly enjoyed the concept, Diamond feared the potential consequences. Beforehand she wouldn't have cared, being too eager to get revenge and to humiliate her mother, but now she did. Diamond Tiara never really thought about how much she had started caring for Spoiled until now. Was it because they had been doing more 'sensual' things with each other and she didn't want to give that up? Or was there something more to it?

Not long after they had finished eating breakfast, Diamond felt a familiar pressure in her gut. Even after a few days of not using one, she still had to stop herself from getting up to go to the toilet. She likely wouldn't have much of a chance to do this kind of a thing once her father was around. It was something she would definitely miss being able to do so casually.

Making sure she was sitting up straight in her chair, Diamond relaxed her bowels. Slowly at first, she felt a smooth log begin spreading her anus and slither out. Due to her upright sitting position, it paused for a moment upon meeting the padding that was pressed up against her ponut. With a firm grunt, she started pushing, forcing the log to smush and squish as it started filling her diaper.

"Ooh~? Is my lovely daughter messing her diaper just like mommy?" Her mother said in a seductive tone.

*Plffport*

Diamond blushed as her mess suddenly transitions into a rush of semi-solid sludge which flows out of her and effortlessly fills up the inside of the diaper. As the muck spread over her rear, it coated her flanks and marehood with a layer of brown. She sighs in relief, enjoying the warm feeling of her warm and mushy poop on her butt. Looking over at her mother she finds Spoiled leaning back in her chair, a hoof pressed and stroking into her own heavily soiled diaper while she bit her bottom lip.

'A great morning already...'

Filthy Rich trotted up the stone steps leading to the front door of his home, but he couldn't help but to sigh. The dealings he had left town so long for hadn't gone particularly well and ended up being a complete waste of time and money. Still, it was nice to finally be getting back home, Diamond was sure to be excited to see him again.

'Hopefully Spoiled hadn't given her too hard a time since I've been gone. Every time I leave for a few days those two seemingly can never get along. If only Spoiled wasn't so demanding of her all the time...' He really wished Spoiled wasn't so adamant about Diamond 'becoming a proper noble mare'.

But then, just as he was reaching out to open the front door, it swung open, revealing his daughter standing there.

"Welcome back home daddy!" She greeted excitedly, an amulet, made in her likeness, jingling around her neck.

"Thanks for the warm welcome home Diamond, I need it." He said, giving her a tired smile. If there was one thing that he could salvage from his trip was that coming back after being gone so long always made his little angel so happy.

"Did something bad happen during your trip?" She asked, looking concerned upon noticing his tired expression.

"Ah, it's nothing you need to be worrying your little head about. Say, where's your mother at? I wanted to ask her about something that had come up while I was away." He asked, walking inside.

"I'm in here, honey!" He heard Spoiled call from the kitchen. Though, something was odd about the way she spoke. She sounded far more...happy than normal. And since when did she call him honey.

Heading for the kitchen, Diamond Tiara followed close behind him. For some reason, she seemed to be really excited about something.

"Hey, honey how-" Filthy stopped mid-sentence as he rounded the corner into the kitchen. Not only was his wife currently hoof washing the dishes, but she was also wearing a black and white maid costume.

"Welcome back dear, how was your trip? I certainly hope it went very well for you." She greeted with a happy, closed-eyed, smile.

"W-why are you wearing that?" He stammered, unable to fight back a light blush as he noticed her raised tail.

Over the course of their marriage, she had only ever worn that costume once. And cleaning the house definitely hadn't been the reason for it.

"Well, I thought you would enjoy seeing me in it. I am preparing dinner for us all, is there something you would like me to make for us mast- I mean dear?"

Filthy was very confused, never once had Spoiled Rich so much as made her own piece of toast yet now she was offering to make him dinner. Was this some kind of joke? Along with the bewilderment at her offer, Filthy couldn't quite put his hoof on it but there was something about his wife's eyes that was throwing him off. Were her eyes a different shade of green?

"Um, Spoiled, are you feeling alright? You're acting a bit...different." Filthy asked.

"Why, of course, it is my duty to adhere to your every need and desire, is it not?" She explained nonchalantly.

"Yup, and she's gonna be the best mom ever now!" Diamond Tiara daughter added, standing just to his left.

As he glanced down to look at his daughter he once again caught sight of the amulet that was hanging around her neck. The green eyes of it were giving him the same uneasy feeling his wife's eyes had. Looking up, into his daughter's own eyes, he was shocked to see they had also changed to match the green color of the amulet.

"Diamond, where exactly did you get that amulet?" He asked cautiously.

"Huh?"

She looked down at it curiously, almost as if she hadn't realized she had it on at first. "Oh, I...bought it in town. Anyway, what kind of dinner did you want mom to make? Go ahead and tell her."

"Diamond, do you think you could take off that amulet for me for a moment, I want to take a look at it."

"Well, um, I uh, I don't really feel like taking it off." She said, suddenly sounding a bit more defensive.

At the same time, the green eyes of the amulet began to emit a soft radiant glow.

"Diamond Tiara! I demand you take off that amulet at once!" He demanded. "I believe that there is something magical going on that is affecting the two of you."

"No, no no! Everything is fine! Just...tell mom what to make us for dinner!" Diamond suddenly yelled back in a very angry tone that Filthy wasn't used to hearing from her.

"Dimond Tiara, please listen to me, we need to take it to Princess Twilight. I really think it has done-"

"Und'r mine own controleth!"

Suddenly, all Filthy could see was a bright green flash, and then...darkness...

"Ugh..." Diamond Tiara mumbled, rubbing the back of her head as she got up on the floor. The strange magical anger she had been feeling a moment ago, once again fading away.

Looking up, she was relieved to see that her mother was still in the kitchen, cleaning, and acting as if nothing had happened. FIlthy, however, was frozen on the spot and was staring off into space. After a few moments, he shook his head side to side, lifting a hoof up to rub his eyes. Looking back down to Diamond Tiara he looked somewhat puzzled for a moment before turning his attention back to Spoiled.

"Honey, could you make us some chili for dinner? I know it's one of Diamond Tiara's favorites." Filthy asked.

Spoiled nodded and started gathering the different ingredients needed from various cabinets in the kitchen.

"Now, is there anything you'd like me to do for you, beloved daughter of mine?" He asked, giving Diamond a kind smile.

Diamond Tiara wasnt sure what to think right now. She hadn't meant to use the amulet on him at all, it just kinda...happened. Glancing down she could see that the amulet was still glowing green. A part of her wanted to try and find a way to undo the spell on her father, but then a much louder side argued against it.

'No, if I do that he'll just try to make me take off the amulet again. This way, everything will work out in the end. In fact, now I don't even have to keep what mom and I have been doing a secret from him!' Diamond realized.

She had a feeling he wasn't going to object regardless...but she wanted to ask him about it anyway.

"I-is it okay with you if...I have been doing naughty things with mom...and that...I kinda really like going to the bathroom in my diapers?" She asked, a small part of her expecting her father to be outraged.

"Well, of course, that's perfectly okay. I would never keep my mistress from doing something she likes doing." He responded.

'Somehow him calling me 'mistress' sounds even weirder than mom calling me 'master'...'

As she thought back to the events following her hypnotizing her mom, Diamond realized that, if she wanted too,...she could do that kind of stuff with him too. In fact, now that she thought about it, she had a full grown stallion at her disposal, one with no qualms about doing anything she asked.

"Hey, dad?" She began, still feeling nervous about what she was about to order him to do. "Can you...s-show me your...thing?"

After the words left her mouth, Diamond thought she would have to clarify exactly what she meant, but it seemed that wouldn't be necessary. With a simple nod, Filthy turned so he looking to her left and lifted his back leg.

Diamond Tiara had always been curious about what stallions really looked like down there. She was pretty sure she knew generally what to expect, having learned a lot about it from the other kids at school, but she had never actually seen one before. Mostly by accident, Diamond Tiara did once see a stallion's balls before as most of them didn't bother to cover them with their tails.

The head of her father's cock was just slightly peeking out from a sheath between his back legs, though it seemed to be stirring as it slowly started to grow and lengthen. It had a surprisingly smooth looking texture and, other than a few darker patches, was the same color as his coat. As his cock finally became fully erect she looked at it with wide eyes.

'It's a lot thicker than I was expecting...how is it supposed to fit?' She wondered

Reaching out a hoof tentatively, Diamond poked at the wide head of her father's cock, watching as it bobbled in the air from her touch response. Sniffing, Diamond could smell a faint musk coming from it. Leaning forwards she gave it another sniff before sticking out her tongue for a quick lick. It was a bit salty but otherwise, it didn't taste all that bad. She was pretty sure he wouldn't fit, at least inside of her anyway...

"Hey, dad?" She asked, forcing him to look down between his front legs to get a good look at her as she stood next to his stiff member.

"Yes, mistress?"

"C-could you...uh...could you f-fuck mom while she makes us dinner?"

Diamond hadn't even intended to swear, it had just slipped out.

"I would love to, mistress." He replied, turning and walking into the kitchen where Spoiled was bending down to grab a pot from one of the cabinets.

As Filthy approached her, Spoiled glanced back, giving Diamond very quick but knowing look. The look had pretty much screamed 'You naughty mare~'. Or at least that's how she had interpreted it. Even with her mother being an adult mare, Diamond still wasn't too sure how he was going to fit inside her.

Spoiled adjusted herself, moving to lean up against one of the counters, her front hooves hanging down into the sink. She too appeared to be getting ready for what was to come, a small drop of transparent fluid dripping down from her marehood.

Diamond suddenly realized what was about to happen. She was about to witness her parents...doing it...right in front of her. Just the idea should have repulsed her, yet instead, she followed close behind her father, sitting down behind him at an angle where she would be able to see everything that happened.

Leaning his head down, Filthy gave a long and slow lick up both Spoiled's marehood and her puffy ponut, making her squirm. Suddenly, he reared up on two legs and mounted her, his throbbing length aligning with Spoiled's enterance. Once in position, the flared head of his cock pressed forwards, right up against her dripping wet pussy, smearing the tip of it with her sticky juices.

Then, with one quick movement, he thrust his hips forward, causing his entire shaft to disappear, deep inside with a resounding *Schlich*. Both of Diamond's parents moaned loudly as she looked down to find herself drooling at the display. For a few moments, Filthy remained fully hilted inside of Spoiled, both of them panting before he slowly started pulling out. Then, right before the head of his shaft could escape her wet tunnel he thrust his hips forwards once again. Over the course of the next few minutes, they repeated this process and each time his thrusting got faster and faster, eventually adopting a smooth rhythm.

As she watched, Diamond was unable to resist darting both of her front hooves down to begin stroking herself vigorously. The musky smell of sex filled the kitchen air, excite Diamond to no end, almost driving her to climax alone. Wanting to get an even closer look at the action, Diamond got up and half-limped underneath them, one of her hooves still working at her burning pussy lips.

Sticking out her tongue, she followed her father's thrusts, taking long licks up and down his shaft, following each one of his thrusts. As she does this she was able to taste the now very familiar flavor of her mother's juices which now coated her Filthy's entire length. Diamond Tiara's peak quickly approaching, she gave one last long lick up and down her father's shaft before calling out to the both of them.

"C-cum!" She commanded.

Instantly her mother cried out in pure ecstasy as, at the same time, her father plunged forwards hard, hilting himself deep inside of Spoiled. Her legs shaking, Diamond climaxed, watching as her father's cock pulsed, feeding rope after rope of thick hot cum deep into her mother's waiting womb. It didn't take long for it to overflow, leaking out from around Filthy's girth.

Diamond Tiara wasted no time leaning up and lapping the white stuff up, almost cumming a second time just from the salty yet sweet taste of her father's cum. Her amulet suddenly pulsed, sending a huge wave of pleasure washing through her body and causing Diamond Tiara to pass out on the kitchen floor, a lusty smirk on her face.

Author's Note

The same person who has requested this chapter has asked for another to follow, so expect that at some point.