KNOCK KNOCK KNOCK Saila stepped back from the door, gazing around the nice suburban neighbourhood she found herself in this Saturday afternoon. Before she had too long to take it all in however, the door swung open, and a large striped figure filled the frame. “Hi there Mr. Trieg!” She said brightly, giving a little wave. The tiger grinned widely. “Oh good! You got here quickly. So sorry for the late notice. I didn’t think I was going to need a sitter, but he’s been so bold the last few days I couldn’t trust him alone,” He said, stepping back to let the foon into the house. She followed his lead into the bungalow, seeing a nice open plan sitting room / kitchen, with a hallway leading deeper into the house. “It’s pretty common with the bigger ones. They have a lot of trouble getting it into their head that they really are big babies,” Saila replied. Mr. Trieg nodded seriously and leaned in close. “Between you and me, he’s been avoiding fully using his diapers. I think it’d really help him if you could get him over that hurdle,” The tiger whispered. Saila nodded eagerly. “Of course Mr. Trieg! I’m an expert in getting my little siblings to understand their place, don’t you worry!” She replied, saluting the big tiger. Mr. Trieg smiled warmly and started heading down a hallway towards the back of the house. “I’ll be right back, I’ll just fetch his supply bag and the boy himself,” He arrived back a few seconds later, an adorable bright blue bag slung over his shoulder. A green tiger lumbered into the sitting room after his dad, sheepishly avoiding eye contact. Saila giggled quietly to herself as she noticed the extra poof to the large jock’s shorts. “Hey there little guy. You ready for a fun day with your big sis?” She asked, paws set on her hips imperiously. Alec stared down at her, clearly uncomfortable with the idea of the significantly smaller foon being his big sis. Especially one who walked around in a pink skirt too short to hide the large pink diaper underneath. He looked to his daddy for support, but the older tiger was whistling as he set out Alec’s newly purchased diaper bag, full to the brim with fresh changes and snacks and juice boxes for his un-growing boy. “Weeeeell? Don’t be rude! I’ll have to put a frowny face on your behaviour chart!” Saila threatened, foot tapping. Alec blushed and stammered, not quite sure what it even meant to get frowny faces on his behaviour chart, but immediately certain that it would not get him closer to being diaper and chastity free. With the supplies neatly set under the coffee table in the sitting room, Mr. Trieg rejoined the two by the doorway, playfully spanking his son’s crinkly butt. “Now play nice Alec! Daddy’s gonna be gone all night, so be nice to your big sis or she won’t let you sleep over again.” “Please dad! I don’t need a babysitter,” Alec begged. His daddy merely shook his head in response. “Someone apparently can’t be trusted not to be naughty and run around without their special undies on,” Saila interjected smugly, “Don’t worry Mr. Trieg, I’ll make sure lil Alec is a good boy for you tonight,” Mr. Trieg smiled warmly and gave the little foon a fond head rub, “I know you will! That’s why I’m entrusting my boy to you. Now have fun! I’d love to stay a little longer to get Alec settled but I’m already running late for my date,” Alec blushed at that, his former husband having shown him several pictures of his impressively endowed bull for the night, unable to prevent himself from imagining all the fun he was going to be missing out on. With a quick smooch on the cheek and another pat on the butt, that was that. Alec was left alone with his new babysitter. They stood across from each other for a minute, Saila contemplating how best to start. “Well, it’s still early and you daddy said you finished your homework yesterday, so if you want you can play games before dinner,” She offered. Alec, who had been nervously tense since the door shut, worried about what new humiliation might be thrust upon him, blinked in surprise. “Like…Xbox?” He asked tentatively. Saila nodded, then held up a finger. “But first, you have to take those off,” She said, pointing to the tiger’s shorts. He blushed and gripped the waistband instinctively. “Why!? They’re my shorts!” He whined. “Becaaaaause silly, I can’t check your diapers if I can’t see them! Unless you want me to give you manual diaper checks?” She replied, paws performing grabby, squeezy motions.. The tiger’s blush grew deeper, and wordlessly he slid off his shorts, revealing the adorably puffy and crinkly diaper beneath. It suited the jock tiger perfectly, with a childish football field design, including fade-when-wet yard lines and “Touch Down!” over the landing zone in fun bubbly letters. Saila took the offered shorts and then let the tiger sit on the couch and start playing. While he was distracted with that, she headed to the kitchen to prepare a quick snack, snagging a pair of juice boxes from the bag Alec’s daddy had left behind as she went. Once in the kitchen, she quickly cut up some fruit, and then prepared the juice boxes. Not just pre-putting in the straw, but also adding a special ingredient from her own backpack. Even unresistant regressees often had trouble getting over the number 2 hump, so she always made sure to bring a little something to help force the issue. She headed back into the sitting room, where the large tiger was now playing some building game, hunched over and focused. Saila giggled to herself and set the fruit and juice boxes down on the coffee table, before hoisting herself onto the couch beside him. “Thank you!” He said brightly, picking up the first box and taking a big sip. Then he reached down beside him and handed over a second controller, “It can be 2 players if you want,” Saila accepted and soon they were building a whole mansion together. As fun as the game was, Saila didn’t let it distract her from her mission. As soon as Alec finished his first juice box, she handed him another one. No need for any more special ingredients. But he was going to be very dehydrated soon enough. She could already hear the occasional grumble from his tummy, and the yard lines on his diaper were disappearing one by one… She chuckled to herself, trying not to squirm with excitement as she had a little accident in her own diaper. She turned her attention back to the game, realising she hadn’t moved in a few minutes. Just a little while longer. Soon enough, the gurgles got louder and Alec began to shift on the couch a little. Saila noticed his eyes flick to the hallway, and immediately knew what he was thinking “Did dad remember to lock the bathroom?” She watched the cogs turn in his head for a few seconds before he paused the game. “Uh, I forgot my phone in my room. I should get it in case dad calls,” He lied, sliding from the couch, freezing briefly as his diaper sagged and squished. Saila smirked to herself as the big tiger realised he’d wet himself, several times in fact, and hadn’t even noticed. She pretended not to notice however, looking up at him with false innocence beaming from her eyes. “Oh of course lil bro. Go get your phone,” Alec nodded and scurried as quickly as he could while waddling bowlegged down the hall. Saila gleefully listened as he jiggled the handle of the bathroom door and then a creeeeeak as it opened. She imagined the brief delight crossing the tiger’s face before… Half hushed cursing echoed down the hallway and Saila had to bite back laughter as the tiger obviously discovered the brand new toilet clamp that his daddy had added right before he left. She took out her own phone and marked down a frowny face for bad language and another for trying to use daddy’s toilet. The bathroom door creaked as Alec tried to shut it quietly again, and in the silence that followed there was a whimper and a groan. She practically skipped off the couch, wincing as her own tummy gurgled. She was much more used to the mixture they had drunk, but it was powerful stuff and even she was going to have an accident soon. Turning the corner, she lifted her phone, camera already recording to capture the humiliating image of Alec, crouched in the hallway. Panting as he desperately tried not to mess his already sagging diaper. The tiger’s face whipped towards Saila as she entered the hallway. A look of pained humiliation crossed the tiger’s face as he saw she was recording. “Nononono, please don’t. Don’t tell daddy, pleaseplease,” He whimpered, before another cramp forced him to grab his twisting, gurgling tummy, “Oh no, oh no. I’m gonna… I’m pooping my diaper!” He whined as he began to loudly unload. Several seconds passed before the tiger finished his business, diaper well and truly filled at this point. Softly mewling to himself, paws over his face in shame. Saila stopped recording, immediately sending the video to Mr. Trieg, before approaching the big tiger. “Aw, did little bro make a mess?” She teased, as Alec began to sniffle, tears welling up. “My tummy hurt, and then I couldn’t stop it!” He said, crying quietly. Saila rubbed his back. “That’s right! That's because you’re a little baby like me! We have to wear our diapers because we can’t control our messes like grown ups can,” She replied, “I bet you didn’t even notice that you had already sogged yourself,” Alec moaned and covered his face again. Ashamed of the truth. That he really did belong in diapers. Tears began to well up and quickly his big sis grabbed his paw and began pulling him back to the sitting room. He whimpered as he was pulled, warm wetness sloshing around his nethers as he waddled obediently behind. Saila quickly began unrolling the changing mat onto some free floor space in the kitchen, pausing briefly as she made a small mess in her own diaper. Just a little one though she thought to herself, winking back at the crying tiger as she finished rolling out the mat. Then she fluffed up a new diaper and set it, the wet wipes, baby powder and a spare chastity cage down. “Alright little bro, let's get you changed!” She said, pointing down at the mat. Alec obliged, settling himself onto the mat, desperately trying not to put weight onto the sagging seat of his diaper. He set his legs apart and began fussing with his tail in his paws anxiously. Saila bit back a whimper as she had another brief cramp, setting her focus on the mess at hand. She quickly undid the tapes and unfurled the tiger’s diaper, dramatically plugging her nose with one hand “Peeeeyew!” Alec blushed, but giggled at the melodrama, distracted from the fact that he was now fully exposed. Saila didn’t give him time to realise that by himself as she expertly took a wet wipe to his filthy nethers, and then several more to get him fully cleaned. The big jock whimpered a little as she lifted his legs (or at least, directed him to lift them with her paw) and cleaned deep into his messy pucker. She was forced, as she thought she might be, to unlock the cute primary coloured chastity cage and set it aside for a proper disinfecting, and take another wet wipe to Alec’s very underdeveloped dick. The tiger squirmed as his nub was touched for the first time in at least a month, hyper sensitive from his cage. Before it could get a chance to even try to remember how to get hard (not that his atrophied 2 inch nub could really get hard anymore), Saila finished her cleaning and locked it right back up in the spare cage. She then wrapped up the used diaper, laughing to herself as she saw that it had a secret message on the seat saying “FOUL!” for whenever its wearer had an accident like Alec’s. Then she set about getting the fresh diaper onto her charge, until she was interrupted by another cramp. This was the big one. She paused in her duties, hands braced on Alec’s knees as she whimpered herself. Alec looked away, trying to give the foon some semblance of privacy as she messed herself right in front of him. Weirdly the experience made him feel better about his own accident. Maybe she was right. They were just helpless big babies. Making messes in their diapers was just what happened. Saila let out a satisfied sigh as she finished her business, giving herself a second to relax and enjoy the sensation of her doody, before getting back to her duty. She slid the fresh diaper underneath her charge’s freshly cleaned tush and quickly taped him back up. “Touchdown!” She said, playfully bapping him on his padded cage, “Now, can you change your big sis, or do I have to do alllll the work myself?” “I can do it. I’ve changed myself a few times,” Alec responded, leaving out the part that he did it behind his dad’s back in order to hide his wettings.They swapped places and soon Saila was receiving the same treatment in return. Albeit with much more enjoyment and much less expertise. Alec blushed deeply when he untapped the diaper and it unfurled to reveal that his big sis not only had the expected female equipment, but some male bits as well. Bits that were bigger than his. “See, told you I was your big sis, eh lil bro?” She teased, waggling her clit in his face, “Guess what else? Mine can get hard too!” She teased, letting herself plump up a little, before letting go, “Now why don’t you think about how you have less manhood than your big sis while you clean me up huh?” Alec nodded, blushing deeply as his limp nub dribbled in his diaper. The pipe may be broken, but the reservoir was still filled. He did his best to clean off his big sis. Thankfully her fur was much lighter than his, and therefore easier to ensure a spotless clean, but it took him several more wet wipes. With that done, she handed him one of her own diapers from her backpack, fluffled and ready while she waited. He slid the pink padding under her butt and gave a few shakes of baby powder before taping her up. She looked at his amateur tape job and grumbled a little before redoing it herself. “Don’t worry, I’m sure I’ll be babysitting you plenty from now on. You’re gonna have plenty of opportunities to practise your tape job,” She teased playfully, as she scooted over and began to clean up their impromptu changing station. After that they had dinner, during which Saila noticed her big charge starting to stifle a yawn. The first time always took it out of you. So much energy wasted on resisting, no wonder he was wiped out. “Okay lil bro! I know it’s a bit early but it's time to get ready for bed!” Saila chirped once all the plates had been rinsed and set away in the dishwasher. Alec looked like he wanted to protest, “It’s only half nine!” but another turbo yawn hit him and his knees trembled a little. “C’mon! Time to get your teeth brushed!” She said, leading the way to the bathroom. Once there she turned and held out her hand expectantly. The big tiger sighed and fetched his toothbrush and handed it to her. Daddy had been doing the same most nights since this whole escapade began a few months back. Due to their size difference, Alec was forced to sit on the toilet so his big sis could reach his teeth for him. It was a little funny to him how another wave of embarrassment rode over him. He’d already destroyed a diaper today, why was this little indignity even registering? He spit when he was told and then had a quick rinse with his special child friendly mouthwash, while Saila started on her own teeth. And then they were ready for bed! Alec’s nursery only had room for one, so Mr. Trieg had given them permission to sleep in his bed for the night. He wouldn’t be using it after all. Alec shyly slid into his old side of the bed, feeling an odd juxtaposition between who he used to be in this room, and the big baby he was now. Saila quickly bounded onto the bed beside him, giggling as the mattress jiggled. “Do you want a bedtime story?” She asked. Alec got the sense that Saila was eager to read a story herself, so he nodded his head. She fetched a book for her bag and a nightlight for the room. She switched off the mainlight and turned on the nightlight and the bedside lamp, then crawled under the blanket beside the big tiger. She started one of her favourite stories, but had barely begun before the tiger beside her began to snore. She smiled gently and gave her newest little brother a smooch on the cheek before switching off the bedside lamp and wriggling down under the covers. As she was drifting off she heard Alec’s phone buzz a few times and smiled to herself, knowing that it was Mr. Trieg sending his big boy some fun videos of his own. Alec was in for a fun, if rude awakening. Hopefully Mr. Trieg had thought to make sure that the videos were suitable for a little diaper baby like Alec. Probably not.