This was so humiliating. I didn’t realize what a can of worms I was opening by letting my little brother ‘be in charge’ for the summer. It was supposed to be a trade-off. He would help me pretend to be a little kid and I would let him call the shots. What I hadn’t realized was that Jake thought that meant I was meant to be his baby brother and he would be taking care of me. That’s what leads me to my current predicament, laying here in an old playpen that was originally mine, while wearing nothing but a diaper. Between my shaved horns, the lack of adult body hair, and the diaper, I didn’t look like a 16-year-old anymore. What was worse was that I’d gotten put in time out here because I didn’t want to help him carry it out from the garage into the living room. Turns out, he’s stronger than I thought. He carried it down himself and lifted me over the top into it. At first, it felt kind of strange to be in it. A weird mix of shame and excitement from being punished like a child. After the first few minutes, it quickly lost its luster since there wasn’t anything to do in here. I heard him moving stuff from the garage, but the angle wasn’t quite right for me to see what it was. After the noises stopped, I had nothing to preoccupy myself except my growing need to pee. It wasn’t that bad when I could occupy myself, but now that there was nothing to do, I needed to go super bad. I called out to Jake, but he didn’t answer. It had been almost an hour now, and my legs were crossed in desperation without anything else to occupy my mind. I knew that he would probably want to punish me if I got out, but I just had to make sure I didn’t get caught. I did my best to climb over the top railing, but the diaper between my legs made it incredibly difficult to use them in any way to assist. Eventually, I got my forearms on the other side through sheer effort, only to have the whole thing topple forward on top of me with a loud clunk, now resembling a cage rather than a playpen. “Shoot!” I called, trying to push the cage back up before Jake came back to investigate. It was no use, though. “What are you doing?” Jake called, moments later, ceasing my efforts to move the pen. “Uh…nothing.” I said, my voice uncharacteristically higher than I’d expected. “Did you try to get out?” he pouted. “No! I just…yes…but..." “No buts! Bad!” He said angrily. The second surprise of the day came as he easily held the pen up with one arm and dragged me out onto the couch. I was going to make him aware of my growing urgency but he caught me off guard when he dragged me over his lap, lowered the back of my diaper and started spanking. “Bad! No leaving time out!” I cried out in pain, instinctively moving my paws back to cover myself. I hadn’t been spanked since I was his age! “B-But!” I tried to get out between pained bleats. “No buts!” he interrupted, spanking me several more time before holding his paw still on my rump. “Are you sorry?” I was more than a little ashamed at this point. He was much younger than me, but those few spanks had hurt! Tears were starting to form in the corner of my eyes, and I suppressed a sniffle as I said “yes…I’m sorry.” “Good. I think little fawn needs a nap, though. You keep being bad.” “Wha- no!” I complained, “I have to-“ Another spank quieted me down into a whimper. “Come on, baby bro.” With surprisingly little effort, he hoisted me upright on his lap, and instead of moving me off of him, he started bouncing me on his lap. I started to ask what he was doing but he just shushed me and kept bouncing me. My face was flushed as I just let him have his way. He pulled my arms around his body and it wasn’t long before I found myself yawning on his shoulder. “Shhh shhh. Good boy,” he cooed. My eyes grew heavy and against my wishes, everything faded to darkness. When I came to, a strange sight confronted me. I was behind bars of some sort. Recalling the events of the previous day, I quickly came to the conclusion – this was my old crib. Thankfully, the thing was designed for a fawn, so I was easily able to escape, but something strange grabbed my attention when I stood up. My crotch felt much bulkier than earlier. The diaper looked different. Where once there were little stars, there was a plain, albeit discolored diaper. My heart dropped. Had I really just…wet myself? I placed my paw on the front of my diaper and prodded it. I had… “Finally awake, little cousin?” Jake said from the corner of the room, winking knowingly before my hackles raised from who followed behind him. I said nothing as I watched the new person approach. “Awww, you weren’t kidding, Jake. Your little cousin is so cute. I thought you said he was your age. He looks like he’s 5. He doesn’t even have his horns yet,” the fox said. I recognized this fox…He was one of my brother’s classmates…Kit? For fear of being discovered, I said nothing, but I wanted to just hide. If only I had a blankie to hide beneath. “He is! I think so, anyway! He just needs naps and has accidents sometimes.” “I see that.” The fox reached between the bars of the crib and grabbed my crotch, much to my dismay. “Looks like he’s wet. Do you want me to change him?” I freezed completely and went red as he touched me in that way, squeaking out a cry of protest. “Really!?” Jake said quizzically, then correcting and saying, “Oh yeah, of course he did. You can change him if you want.” Kit smiled and lowered the side of the crib before picking me up with seemingly little effort. I looked to my brother for help but he just shrugged at me and smiled. Against my will, I wrapped my arms and legs around the young fox as he carried me over to the bed. Jake handed Kit a new diaper – this one was like the one that was originally on me. It was more like a pullup than the thick white diaper that was on me right now. I readied myself for embarrassment as he untaped my diaper. I was ready to be humiliated about my small cock but he said nothing as he cleaned me up and replaced the soiled diaper. As soon as the new one was taped on, I sheepishly mumbled out a “thank you,” which sounded a lot more childish than I usually did. “You’re welcome lil fawn. My name’s Kit and I’m a kit. Easy to remember, huh?” he said with a smile. Despite myself, I giggled. He’d said that joke before when he’d met my parents and I rolled my eyes but it seemed much funnier in the current mind state that I was in. During the process, Jake had slipped out of the room at some point. Kit took note of this and whispered to me, “don’t worry about the diapers, lil guy. I still have to wear them too. See?” Taking one more look back to make sure my brother wasn’t there, he lowered his shorts to show me the printed pullups he was wearing. They looked to be a bit too small for him, though. I was suddenly very confused at everything I was feeling, broken only by a voice that called out. “You done yet, Kit?” Jake called from the hallway. “Yeah! Just need to get your cousin all dressed up.” He then looked to me and whispered, “ready? What’s your name by the way?” I blushed as he offered me a paw. Jake and I had a plan for this…what was it again? Ummm, shoot. I couldn’t think. “Kevvy!” I said without thinking, my ears flattening as I’d told him my real name, accidentally. “Levy? That’s cute. I like it!” I breathed a sigh of relief. It felt so invigorating to be like a cub again. We were playing ball in the field with a dozen or so of Jakes’ friends. At first, I was a little annoyed that we weren’t playing by the rules. People would switch teams seemingly at random and the rules changed at the whim of the cubs. It took a little while to get used to, but it didn’t matter after long. As the day drew on, kids left the field in small groups. Towards the end, it was just Kit, Jake, and myself, although I’d benched myself over an hour ago, exhausted. I couldn’t believe the two of them were still at it. I was hoping they would finish quicker, since it was becoming increasingly urgent for me to pee. And while I knew I could find a bathroom in the park somewhere, I didn’t want to leave my little brother alone, even if I didn’t look like his big brother anymore. When the two finished up, I was treated to a strange scene. Kit grabbed Jake by the hand and pulled him in to a hug that seemed a little prolonged. Jake’s paws disappeared for a second and Kit jumped back very suddenly and rushed over. “Ready to go, Levy?” I tilted my head at him, a little confused. “It’s late. Are you coming over?” “Yeah! Jake said it would be okay to come over.” I furrowed my brow in annoyance. I wish he’d asked me first. I couldn’t let Kit know that, though. Jake was supposed to be in charge, after all. “You wet, Levy?” Jake asked, saying my made up name in a way that made me uncomfortable. I uncrossed my legs and looked away. “No.” I said shyly, trying not to give him an indication that I needed to go. Jake giggled knowingly, “well, let’s head back, Levy.” I was walking funny after just a few minutes of heading back. The park was only 15 minutes away, but I wasn’t going to make it! I started to sniffle, knowing what was coming as I hung back from Jake so he wouldn’t notice. Kit looked toward me and I had to avert my gaze. “You okay, Levy?” He asked, noticing my potty dance as I was now unable to even take a step forward. Tears started flowing from my cheeks as I let out a stream of urine into the diaper. It was too much. Kit started walking toward me and I whimpered, my legs bowing inward as the stream continued. “Oh no!” Kit said in a panic as he took off his shirt and started tying it around my waist. “Wh-what are you…” I said, panicked, until I realized what was happening. The flow of urine was slowing down, but I felt a warmth down my leg. The diaper was leaking. I was full out crying at this point, but Kit had his arms wrapped around me. My muzzle was buried in his shoulder. After I’d calmed down, Jake had come over and pat me on the head. “I guess it’s thicker diapers full time for you, then.”