Author's Note

Lauren Faust at least said that the Cakes love Pinkie like a daughter, and I feel like it's not hard to see that connection even now in the show.

I figured it'd be nice to try and have a few build up chapters before we delve right into the thick of things. Which is what will happen in the next chapter.

Mommy?

Mr. Cake said nothing further as he departed, and Pinkie Pie felt like he didn't need to. In her mind he had said enough.

What had she been thinking?! Why did she ever believe this was okay?! It wasn't! It was weird, and strange, and out there, and every other kind of word you could think of that would describe how wrong it all was.

Any desire to indulge left Pinkie immediately after the discovery by Mr. Cake. She immediately took off the diaper (which was difficult considering it barely fit her), she then cleaned off the pacifier and put it away. After that, she spent the entire rest of her day just watching over the twins. Her mane and tail deflated a little, and the bounce went out of her step as she was nervously wondering what Mr. and Mrs. Cake were thinking about her. At the least she owed it to the Cakes to watch over their children like she had promised. At least she'd be good at keeping her word.

After putting the twins to bed and hearing the front door of Sugarcube Corner open, Pinkie immediately bolted upstairs to her room and shut the door behind her. She was in no mood to face either of the Cakes right now. Mrs. Cake especially. She was certain Mr. Cake had already filled the plump earth pony in on what he'd seen. Pinkie wouldn't blame Mrs. Cake if she was going to insist Pinkie never indulge again and stay away from her children. Maybe it wouldn't be that extreme, but Pinkie still didn't expect Mrs. Cake to be happy. So why bother facing her? She could just stay up here until the Cakes decided what to do with her and her stupid interest.

Pinkie threw herself upon her bed and buried her face beneath the pillows. Not even Gummy could cheer her up or could get her to talk. Occasionally, a few light sobs would escape from her. But for the most part it was just silence as she tried to listen for any sounds of a conversation between the Cakes. Yes, it was rude to eavesdrop, but what else could she do?

Strangely though, the pink party pony couldn't decipher any traces of a conversation. Assuming the Cakes were discussing what to do with her after what Mr. Cake had trotted in on, she was unable to hear a thing. Perhaps they were just being very quiet so as not to wake the twins?

After only a little bit though, Pinkie swore she could hear the sound of hoofsteps. And they were growing louder by the second. That could only mean one thing, the Cakes were on their way up to speak to her. Well, she was in no mood to see either of them, let alone talk to them.

It wasn't long before there came a knock at the door to Pinkie's bedroom. "Go away! Nopony's here!" Pinkie shouted, refusing to lift her head from the pillows.

"Pinkie Pie, saying that nopony's here proves that somepony is here," Mrs. Cake replied from the other side of the door. "Please, I just wanna talk to you. I promise, I'm not mad. Carrot Cake told me everything."

Pinkie still sniffled. "I'm not talking to either of you. I know what you think of me now! I said go away!"

Mrs. Cake wasn't one to take no for an answer. Being a mother meant you learned how to pick up on things that might otherwise not be noticeable. And to her, Pinkie Pie was very much like a daughter. Always had and always would be. Perhaps it was time to show some of that motherly love and affection. "I'm going in!" She told her husband as she turned the knob on the door. Pinkie hadn't locked it, so the door opened and Mrs. Cake trotted in.

It didn't take long for the plump earth pony mare to spot the pink bundle of joy in her life. Pinkie was a pony who was pretty easy to spot. Plus, Mrs. Cake knew Pinkie's room like the back of her hoof, and she knew all the places Pinkie tended to be whenever she was feeling down.

Mrs. Cake strolled up beside the bed, lightly prodding at Pinkie with her hooves. "Pinkie Pie, dear, please come out and talk to me. I already told you I'm not mad."

"You're just saying that!" Pinkie protested, refusing to obey. "Of course you're mad at me!"

"Why would I ever be mad at you, Pinkie?" Mrs. Cake asked as she sat on the bed and tried to coax Pinkie out of hiding.

Pinkie sobbed and sniffled beneath the pillows. "Because what I did isn't natural. It's weird, and freakish, and makes no sense."

Mrs. Cake only sighed. "Pinkie, you already do a lot of things that don't make sense to anypony. Things that have driven other ponies crazy trying to figure out. But Carrot and I don't think any less of you because of it. To us, that just makes you special."

Pinkie just continued to sniffle. "This is different, though. I was wearing a diaper. I had a pacifier in my mouth. I was dressed up like a big foal. Nopony does that!"

"Nopony, except you, Pinkie," Mrs. Cake replied in a soothing tone of voice, lightly rubbing Pinkie's back to try and calm her down. "Yes, it's weird and different, but you weren't hurting anypony while you were doing it. What you have isn't something to be ashamed of."

A reluctant Pinkie poked her head up from the pillows very slowly. "It isn't? How would you know? You've never seen anything like it before. And neither have I."

"You're right, I haven't seen it. But I have heard about it," Mrs. Cake replied as she then explained. "When I was pregnant with Pound and Pumpkin Cake, I read up on all sorts of books on foalcare and on foals in general. One book mentioned that there's a group of ponies all over Equestria that for one reason or another want to relive their foalhood, to feel like and act like babies again. They're called adult foals, or in some circles forever foals. From what I understand, diapers are a big part of it. But not every adult foal wants to wear them or even needs them. Some are safe just using pacifiers or playing with foal toys. Others go all out, they even have giant nurseries and somepony to care for them. Most fall somewhere in between. And there's a whole variety of reasons why they become these big foals," Looking Pinkie in the eyes she then asked. "What exactly brought out this new side of you? What made you want to indulge today?"

Pinkie's lips quivered, her eyes were red from all her crying and her mane and tail were still flat. The pink party pony all but buried her head into Mrs. Cake's chest. "I... I don't really know. It just sort of happened over time," She tried to explain. "Even when I was growing up on the rock farm I always felt... different from everypony else. We had diapers and some toys and bottles, but that was all just inside the house. Usually, when out in the fields, you just went wherever and cleaned up in a stream. Maybe that's when it all began, or maybe it wasn't. For a while, I just thought I was content spreading joy and liking childish things, like a big kid that never wanted to grow up. But then, when the twins were born and I foalsat them for the first time, something started to stir inside me. When I tried to change them and got their diapers stuck on my head and my rump, I didn't think anything of it at first. I was too focused on being responsible. But afterward, there was a part of me that wanted to try it again."

"But that was years ago. Have you been biding your time until now?" Mrs. Cake asked.

Pinkie shook her head. "No. I pushed those thoughts to the back of my head. I thought if I just ignored them they'd go away. But they kept coming back, they wouldn't leave me alone," A sigh escaped her lips as she added. "I think what pushed me over the edge, what finally brought out that side of me I was trying to bury, was when Flurry Heart was born. Seeing her all cute and cared for, so relaxed and without worry. I wanted to be just like that. I couldn't ignore it. But I was too afraid to ask anypony, I thought they'd either think I was joking or consider me a freak. That's why... I had to wait until I thought you and Mr. Cake were going to be gone all day."

Mrs. Cake was silent while Pinkie poured out her feelings, opting to simply stroke the young mare's mane to try and relax her. Once she was certain Pinkie had finished, the plump baker looked her young apprentice in the eyes and told her. "Pinkie, I'm very glad that you told me this. It was very brave of you. And I want you to know that, no matter what you may be or what you get into, it's not going to make me love you any less. I've always felt like you were a part of my family, like a daughter to me. And now, I think there's a way to truly realize that bond between us," She paused for a moment to let her words sink in. "Pinkie... would you like it if I became your mommy, and Carrot Cake became your daddy? After all, all little ones need at least one or the other, no matter how big they might be."

"But... I already have a family. I don't want you to replace my actual parents." Pinkie protested.

"And who says you have to? You can have more than one family. After all, you're already technically related to the Apples, and they consider you an honorary family member," Mrs. Cake explained. "The same thing can apply here. Besides, I think Carrot wouldn't mind. Now that the twins are starting to graduate from diapers, we could certainly use a big foal to help us stay in touch with our parenting skills. But I don't wanna force you into something you're not comfortable with. I already talked to Carrot about this, he was the one who proposed the idea. But I won't go through with it if you'd rather just keep it all to yourself."

But the pink earth pony shook her head. "No, I want you to be my mommy, and for Mr. Cake to be my daddy. It'll feel more natural. You sure you're up for it? I've never really been a big foal before, especially not around anypony else."

"That's okay, Pinkie. Carrot and I have never cared for a big foal before. So we can all learn as we go," Mrs. Cake suggested. "And you can be as big or as little as you feel like," Then she hopped off the bed, helping Pinkie to stand. "Now, why don't I fix you a warm glass of milk before bed? And then tomorrow, you, Carrot Cake, and I can all go shopping for your supplies?"

Pinkie smiled as her mane and tail started to return to normal. But then they stopped midway as a thought struck her. "But, I don't know of any places that sell things for 'adult foals'."

Mrs. Cake just winked. "Don't worry, Pinkie. I've got that covered."