"Zipp and the Case of the Brighthouse Baby"

Now that Sunny thought about it more, she had probably stayed in diapers longer than most foals. Her dad didn't seem to mind, he seemed content to let her grow up at her own pace. So that's what her dad did. He let her go about potty training at her own pace: If she wanted to be in a diaper she could be, he bought her diapers so she can be happy but also telling her to take it slow and enjoy life as it is.

So with her dad being supportive, Sunny had started wearing diapers from time to time, being careful of course when she was around friends, and taking it slow. She’d also keep her changing supplies in the bathroom as a way to escape a bad situation if it comes to a must change emergency.

Now, with Sunny’s dad having passed on, and working at her smoothie cart, she’d been working so much every day that she yearned for a more carefree time. So it was that she’d come back to the Brighthouse yesterday, relaxing after a long, hard day. She remembered that she was alone for the whole night: Izzy was in Bridlewood for a festival, Pipp was with Queen Haven for three days, and Zipp was doing some investigative work with Hitch.

Satisfied with this knowledge, Sunny got up from the couch, heading up to her secret room in the Brighthouse to find her diaper stash. She proceeded to get diapered for the night, have a little fun with her toy blocks and other toys her father had gotten her when she was a little filly. She played through the whole night ‘til she was about to go to bed. As she did so, the last meal she’d eaten came back and knowing how she was alone for the whole night she simply used her diaper, and was so tired she didn't take it off before going to bed. She always made sure to use plenty of powder so she wouldn’t get a rash.

While Sunny was asleep, Zipp came back to the Brighthouse early, noticing the place was quiet. But for some reason a bad smell was lingering. It wasn't old trash, the trash had been taken out two nights ago, Zipp had specifically seen to it (since it was her turn to do so). Something was up, but she couldn't think of what it was.

Zipp immediately flew up to the bedrooms, preparing to ask Sunny if she knew anything about the smell. Then she saw Sunny sleeping, but her eyes thought they noticed a lump of sort underneath the bed sheets.

Then Zipp remembered what Izzy had said about how Sunny liked to sleep with the lantern, and thought nothing of it. “Best not to wake Sunny. If she’s sleeping like this, the smell obviously isn’t bad enough to bother her.” She thought. Still, the smell was a mystery that needed to be solved. So Zipp quietly grabbed her detective gear and started searching the whole Bighthouse from top to bottom to find out where this smell was coming from.

Zipp searched all night, trying to find the source of the smell, but to no avail as the source eluded her. She checked everywhere: The fridge, the trash can outside, and even in the food cellar, but she couldn't find the smell.

Now it was getting to be morning, and still Zipp had no leads on the smell. The only place she hadn’t looked yet was in the bathroom: That meant it had to be where the smell was coming from. So the pegasus detective went to look there, pushing open the door only to find the bathroom unoccupied. It was clean, no smell. Frustrated, Zipp groaned and left the bathroom just as Sunny was coming down the hallway.

Sunny was most surprised when she got near the bathroom, and saw Zipp coming out with her detective gear on. She did her best not to look suspicious as she waddled along, trying to keep her backside hidden from view. “Oh, morning, Zipp. When did you get here, and what brings you here today in your detective gear.”

Zipp just replied. “I came here last night after helping Hitch. And when I did, I noticed a smelly smell. It didn't smell like moldy food or the trash wasn't taken out, it was a smell like a foal or filly would make,” She sighed. “I investigated the whole area and found nothing.”

Sunny sheepishly answered. “W-well, I’m sure you’ll get to the bottom of it eventually.” And she hastily zipped into the bathroom, shutting (but not locking) the door behind her.

Suddenly, it dawned on Zipp. There was the smell again. Pushing the bathroom door open to confirm her suspicions, she quickly spotted none other than Sunny in an obviously used diaper! Once the shock had worn off, the pegasus detective saw fit to ask. “Uh, Sunny, why are you in a diaper?” Her eyes began to notice a very telling detail about the padding. “And, is that lump in there because you…” She coughed into a hoof. “You know?”

That's when Sunny knew she’d been caught! Still, she tried to play it off, hoping that maybe she could convince Zipp that she wasn’t really seeing what she was seeing. “Oh, this… uh… it's just… uh…” Her words failed her as she backed away slowly, thinking in her mind. “Oh crud! How do I get out of this?! I should probably tell her… but, I don't want her to be upset or see me as a freak! I need to tell her something, though.”

Then, suddenly, an idea came into Sunny’s head as she swore she could hear her father’s voice telling her. “Just be honest with your friends, Sunny. They will support you.”

So with a sigh, Sunny confessed. “Okay, you caught me, Zipp. It’s a lump, it’s what you think it is, cause I’m an adult foal. I like to wear diapers to relax and unwind after a long day. In fact, it’s more than just diapers. I like to play with toys and other stuff I did as a little filly, and enjoy the night ‘til bedtime,” Then she blushed. “As for the smell, well…. I had to go, so I did, knowing that our friends were away. And then I just forgot to change before I went to bed. I didn't think you’d be back so soon, I thought you’d be back late in the morning so I could change, get rid of this diaper and air out the lighthouse before anyone would notice.”

Then, in spite of the courage she’d just shown in confessing, Sunny began to cry and whimper in front of Zipp. “Please don't hate me! I’ve never told anypony about this! Not even Hitch! He used to tease me about staying in diapers after he and Sprout were potty trained. My dad didn’t have me fully potty trained until I was five, and even after that he’d still sometimes let me wear diapers if I promised to change myself.”

Luckily for Sunny, all Zipp did was comfort the padded mare by draping a wing over her, fully embracing her big sister self. “Hey, hey, it’s okay. I don't hate you for what you are or what you do. I’m your friend, and friends will always be there for each other. I’m sure the others will understand. You could just say you have a stress reliever and go from there, and be honest,” Then, as she was reminded of what had led her to her discovery, she asked. “So uh, do you have any extra diapers? ‘Cause that diaper is really getting smelly.” And she put her hooves over her nose.

Sunny’s blush deepened. “Oh, right. I only came in here to flush the evidence and wipe up a little,” She confessed as her eyes turned to the bulge in the back of her diaper. “Obviously, if I left dirty diapers lying around, it’d be pretty hard to keep it a secret,” She then insisted to Zipp. “Please… uh, follow me. I have a secret spot for all my stuff, but I want you to promise not to tell anypony right now. I don't feel like it's the right time to do it.”

Zipp gave a salute and nodded. “I don’t worry, your secret’s safe with me. It’s like I told you in Zephyr Heights, I can be pretty sneaky when I want to be. So I know a thing or two about keeping secrets.” Then she followed Sunny as the earth pony led Zipp to her secret spot, tucked away into a corner near the lift that led up to the crystals.

“Okay, here it is.” Sunny said, as she put her hoof against a hidden switch. There was a click, and a wall lifted to reveal all of her diapers, changing supplies and toys she’d saved from her foalhood.

Zipp gasped! “You have all of this?! My mother got rid of all my filly toys cause I'm a princess now and cant have such toys,” She then grumbled. “But Pipp got to keep hers for some reason,” She quickly changed the subject. “Anyway, can you change yourself or…” She blushed, looking at Sunny’s stinky bottom. “Do you want help with… that?”

All Sunny could say was. “You can help me if you want. It’s kind of hard to do it myself.” And her blush grew so big it enveloped her entire face.