Not So Big Brother (Chapter Three)

Jack couldn't believe what was happening. He knew exactly what Ellie's game was. The more he gave in to her blackmail, the more blackmail she would be able to hold against him. She showed him the picture she had just taken; him sat on his bed a poofy adult nappy. It was humiliating.
"Just how long do you think you're going to get away with this?" Jack asked, trying to come across a lot bigger than he looked. Because at the moment, he looked like nothing more than a whiny little baby boy in a diaper.
"How long do you think it will take Mom to find out? You're not exactly being subtle, are you?"

Ellie agreed. She wasn't being subtle. But she wouldn't have to be. She had a plan.
"Has it not occurred to you, Jacky, that it's the school holidays for the next four weeks?" Ellie said bluntly.

Jack's heart sank. She was right. And with their mom working 9-5 everyday Jack would have no choice but to spend eight hours a day for the next month doing whatever Ellie told him to.
"And besides," Ellie continued. "If mom finds out that you were teasing me about my problem, she'd probably just tell me to put these pictures up straight away regardless." She said smugly. Ellie and her mother had always been close, and her mother had always said if something teased her at school they would never feel the end of her wrath.

"Anyway." Ellie said as she started fiddling with something in the bag she had next to her on the floor. "We can't be having a day of fun without starting with a healthy breakfast." She produced a large baby bottle filled to the top with milk.
"Baby needs to get his milk so he can grow up to be big and strong." She said, making a muscle man stance.

Ellie took the bottle over to Jack, who was sitting there in nothing but his diaper, unsure how to tackle this situation. She popped the nipple of the bottle into his mouth and sat down on the bed next to him, putting him into a nursing position. He reclined back and rested the back of his head in her lap. Seeing his sister from this angle was so peculiar. She looked so much bigger from down there.

"Who's a good little Jacky?" She cooed as she teased his mouth with the nipple of the bottle. "If you finish it all right away, I'll give you a present."

Jack was wary of this, but again was eager to get into Ellie's good books. He needed her to stay happy with him. So he sucked eagerly at the baby bottle and drank it dry. The milk was warm and creamy, but had a hint of something else about it...

"So what's my present?" He asked curiously. Ellie frowned at him, and raised an eyebrow expectantly.
"So what's my present, mommy?" He added, looking rather ashamed of himself. If he were a dog then his tail would have been between his scared little legs.
"A wet diaper!" Ellie cheered as she stood up and started filming with her phone. Jack looked at her in confusion. What did she mean?

And then he felt it. He felt the agonising wrench in his bladder that meant soon, whether he wanted to or not, he'd be emptying it wherever his dick was pointing. And right now it was in his diaper.

Jack looked down in disbelief, whilst Ellie looked on in glee. He felt every muscle in his stomach suddenly relax, and they both heard the tell tale splash and trickle of a little boy filling his diaper.
"No! This can't be happening!" He gasped as he saw a yellow stain start to emerge on the front of his padding. Ellie was giddy with delight seeing her brother reduced to this, and catching it on film no less.

The padding between Jack's legs began to swell, and the material that was once so thin and crispy had become bloated and squishy.
"How does that feel, baby Jacky?" Ellie giggled to herself. She had already wet her pull-up this morning, and knew that the sensation she could feel at the moment, the warmness around her crotch, Jack was feeling right now, coupled with the fear of having lost his bladder control.
"Don't forget, little baby," Ellie said darkly. "I own you."

Jack felt so humiliated. So humiliated and scared. How long had he lost control for? A day? A week? Longer? He'd have no choice now. Wearing diapers wouldn't just be a punishment for him. It would be a necessity. Ellie was holding all the cards now. His mother wasn't going to rescue him, his girlfriend Michelle wasn't going to rescue him. He would just have to keep playing it sweet for fear that if ticked off, his little sister could upload a video of his wetting a diaper at any point she wanted.

"Right then, Jacky." She said once she was sure he'd finished flooding his diaper. And boy did he flood it. The now yellow material was ballooning, and moisture was forming on the outside of the plastic of his diaper. "It's time for a diaper change, don't you think?"

Jack looked at her evilly as he sat down again, making his diaper squelch beneath him as he laid down ready for his change. Ellie raised her eyebrow again and then wagged her finger at him.
"No, no, no, Jacky. You're staying in your wet diaper as punishment for drinking your ba-ba too slowly and talking back. You're going to give ME a change."

Jack got up unsurely, not entirely sure if Ellie was joking or not. But when she peeled off her skirt and put a fresh adult diaper in his hand to go in place of her pull-up, he realised she was in fact deadly serious.
"You want me to change you?" He said as he started unfolding the diaper in his hands.
"Yes, yes I do." She smiled with a wink. As she stood there before him he could see her purple pull-up was swelled just as much as his diaper.
"There's no way I'm touching your pissy pull-up." He laughed nervously. "That's fucking gross."

Ellie turned and looked at him carefully.
"Excuse me, baby Jacky? Did you just swear AND not say mommy all in the same breath?"

Jack gulped.

"Well since pissy diapers are 'too gross' for you," she said approaching him and taking his right hand in hers. "You can have another punishment."

Ellie took his hand and pressed it against the back of her diaper; the seat. Jack felt weird touching his sister's ass, but the look she had given him told him not to fuck with her.

Jack didn't realise what was going on until Ellie squatted a little and gave a grunt.
"Oh yeah, that's the spot." Ellie laughed as she felt her bowels loosen and a slow log of shit fill up the back of her pull-up. Jack went to pull his hand away, disgusted, but Ellie grabbed it and pressed it harder against the pull-up and her shit. He could feel the already wet diaper getting fuller and fuller as Ellie released last nights dinner into the back of her nappy. She loved that her brother was squirming uncomfortably behind her, feeling ever ounce of mess that was coming out of her asshole.

Once Ellie was finished, she gave Jack's hand a hard squeeze, making him squeeze her shitty pull-up with his hand. Jack retched when he saw a little shit squeeze out of the back of the elastic leg hole and drop onto the floor.
"Don't ever try to tell me you've got it bad, Jacky." Ellie said slyly, enjoying the feel of the hot mess in the seat of her diaper, squished up between her butt cheeks. "Because  I can always make it a thousand times worse."

"Now clean that shit off the floor and change my diaper, little baby."

Not So Big Brother (Chapter Two)

After stealing the lithium Dichlorate and also acquiring a selection of other drugs and supplies whilst she was there, Ellie made her way back home at once. It was a dark walk home, and once she got back she snuck in through the back door, tentatively pushing down the handle and sneaking in.

Jack was in the garage working out and her mother had already gone to bed, so nobody noticed her leaving, let alone her arrival.
"Get ready for a taste of your own medicine, Jack." She giggled to herself, pouring a small sample of the drug into his water bottle. Jack loved to exercise, so she knew he would drink it readily after he had finished whatever exercise he was doing in the garage.

With this in mind, and with her plan already in place, she headed up to bed.

Ellie hadn't realised that she had wet herself on the way back, and so peeled off her soggy pull-up and tossed it in her pail. She wiped her crotch and then stuck on a new one, enjoying the feeling of the fresh, crispness of it against her skin. Ellie didn't remember when she fell asleep, but it was a deep and content one with dreams filled with revenge.

*

When morning came, Ellie rose a little earlier than normal. She had to catch her brother in the act, and knew that he didn't like getting up until late. She crept quietly around the corner outside her room, quickly unlatched and opened his door and snuck up to him. He was lying spread eagle on his back, snoring like a chainsaw. But what would really matter... was what was going on underneath the blanket.

Ellie tore back the blanket, and before she even had a chance to check whether the evidence was there or not, she brought up her phone and started taking pictures of her brother in nothing but his boxer shorts. And much to her delight, they were soaking wet. The room was filled with the scent of his piss.

"What," Jack said, bleary eyed as he sat up, confused. "What're you doing in here, diaper baby?" He said with a little chuckle, until he looked down at his crotch and saw the dark, wet stain that had spread out over his duvet and into the mattress beneath him.

"No, no, no, Jack. I think you're the baby here." Ellie laughed as she took more pictures of him in his confused state. "And if you try anything, or don't do what I tell you, these pictures are going up on Facebook for all your friends to see, understand?"

Jack was lost for words and then went to reach for Ellie's phone. She snatched it away.
"You ever heard of the cloud, Jack?" These pictures are already somewhere that you can't possibly get to them. So don't even try smashing my phone. That's a definite one way ticket to your newest photo shoot going public."

He stayed there stuttering for a little while. Ellie was stony faced on the outside, but was holding a parade on the inside. She'd actually got him! There was nothing he could do to her. He was putty in her hands and he knew it!

"You bitch." He growled at her with genuine hate in his eyes.
"Now, Jack," she tutted at him like he was a child. "language like that won't do whilst you're in my care. Now get these sheets put in the wash. Mom's already gone out for the day with Aunty Steph. So you and I have the whole day to play together!"

Jack sat there for a moment or two, dumbfounded. Somehow, within a single minute, he had gone from being the alpha male in this house, to the bottom of the food chain. He watched Ellie as she sauntered out of the room with a slinky move of her hips as she went.

Should he have just smashed her phone anyway? He wasn't sure. He could easily get pictures of Ellie in her wet pull ups, but she probably wouldn't be threatened by it like Jack. She didn't lean on friends as much as he did. He was a strong guy. Confident and attractive. And he was at the top of a very delicate social ladder. A picture of him in a pissy wet bed would very quickly destroy his reputation. So he'd have to bite the bullet, and do anything his sister told him to.

Reluctantly, and still unsure of just how much bladder control he had now, Jack stripped his bedsheets and put them in the wash. After that he had a shower and returned to his room to find Ellie sat there looking smug.
"There we go, Jacky." Ellie said in a babyish voice. "Does Jacky feel better now after his shower?"
Jack looked at her scornfully.
"Cut it out, Ellie."

"No, no, Jacky. That's not how babies speak to their mommies, is it?" She tutted with a wag of her finger. "Now, come over here and lie down on your bed..." Ellie demanded. "...naked."

"Fuck you." Jack spat. "There's no way that's going to happen." But when Ellie showed him the picture of him looking scared and confused in a pissy wet bed, he reconsidered his approach.
"Fine..." He growled. He peeled off his towel and let it drop to the floor and then covered his crotch with his hands. "...this is fucked up, Ellie."
Ellie slapped his hands, which in turn knocked his balls.
"Babies do not speak like that to their mommies." She said monotonously. "And besides, Jack. You hurt me so much yesterday, and made me feel so scared and embarrassed, that I thought I'd better show you who the real baby is in this house. And from what I can tell..." She smiled slyly as she showed him and adult diaper she'd picked up from the chemist last night. "...the only baby here is you."

Jack went to argue, but he didn't have a foot to stand on. He had to keep Ellie sweet and make sure she didn't disperse that photo, at least until such a time he came up with a plan to get her back.
"Now lie on your back and stop covering up your baby bits. You don't need to be afraid, mommy has seen it all before."

Jack was genuinely scared. He had clearly upset his sister to such a point that she was hell bent on exacting a perfect, full on revenge on him.
As he was lost in his thoughts, Ellie slapped his hands, and he naturally drew them away, exposing his manhood to her. Ellie looked on in awe. Sure it was her brother, but she had never seen another boys bits before. She looked at them curiously.

"Right then, little Jacky." She said as she stared to unfold the crisp, white diaper. She loved the feel of it in her hands. Despite having no choice about wearing her pull-ups, she did enjoy the feeling of padding against her butt and crotch. It made her feel well protected.

Without waiting for any say so, Ellie immediately slid the opened diaper underneath her brother's butt and wrapped it up over his crotch.
Jack eyed her dangerously as she did so, he was desperately trying to figure out how to get himself out of this position.
Ellie did up the tapes on either side and gave the front of his diaper a little tap, making him jump.

"There we go, Jacky." Ellie said triumphantly as she brought up her phone and took another set of pictures of him. "Now you're a baby as well as a bed wetter!"

Not So Big Brother (Chapter One)

"Haha I can't believe this! You big baby!"
"Jack, shut up! Give them back!"

Ellie was trying her hardest to hold back the tears, but she was just so embarrassed and annoyed and FURIOUS. Her brother had pushed it too far this time.

Ellie had been keeping her incontinence a secret for a long time now. All her life in fact. The only people who knew were her, and her mother Brandy. Ellie had never met her father, so it was just the three of them together in the house.

That morning, Jack had been trying to wind Ellie up, as per usual. She lived in the room next to his, so he'd constantly bang against her wall to annoy her, or play porn at full volume to make her feel uncomfortable. He'd always do it when she was trying to go to sleep, just to add insult to injury.

He had burst into her room to try and scare her as she was doing her schoolwork, but much to his delight he had found that on her bed, was a pack of pull ups that she no doubt intended to use.
"Haha, you little bedwetting baby." He snorted as he waved the pack of pull ups above her, just out of her reach.
"Jack, cut it out, I can't help it." Ellie cried, a tear rolling down her cheek and sniffles coming from her nose. Her brother had no idea how embarrassed and ashamed she felt.
"Haha, ok little baby." He said as though disgusted. "Have your little diapers back."

He threw the diapers back and hit Ellie in the face with them. They broke out of the pack and scattered around the floor around her.
"I hate you." She whimpered shoving him out of the room and slamming the door. She locked it behind him and burst into tears.
"I hope you get what's coming to you, Jack." She growled through bared teeth to herself.

But in reality, she knew that nothing would happen. He had been teasing her for her whole life, but this was on another level. This made Ellie feel so disgusting. The fact that she couldn't control her bladder was bad enough, but bowels made it harder. There was only so much that you could hide the smell, especially when you were in public, especially when she was at school. She had to get her brother back.

*

After cleaning her room back up, putting her pull ups away and making sure she'd wiped the tears away well enough, she went downstairs to get her lunch. Her mother was there, bustling about the kitchen.
"Hey sweetie," her mother, Brandy, said. "You want some of my omelette?"

Brandy and Ellie couldn't have looked more dissimilar. Brandy was tall, and full figured. She had striking blonde hair that ran down her shoulders and over her E-cup tits. Follow her body down, and you'd find a fine, meaty ass constrained by nothing more than a tight pair of yoga pants. She worked at the local chemist, and always wore a short dress with tights underneath. You could always see her thong through them.

Ellie took after her father apparently. She had quite a petite figure, with small c-cup breasts and dark brown hair put up in a ponytail. She was a bit of tomboy compared to her bombshell of a mother.

"Yeah, sure." Ellie said glumly, letting her mother plate the omelette up for her which she tentatively picked at.

Her mother strolled across the kitchen with her omelette on a plate before heading into the front room.

"Come down here for a diaper change, baby?" Jack laughed as he poked his head around the door frame. Ellie felt her stomach clench and her fists tighten. Her vision was red. She hadn't felt such agonising hatred towards anyone ever.
"Shut up, Jack. Just let it go."
"Are you wearing one now?" He laughed, leaning over and trying to pull up the side of her plaid skirt.
"Stop it, Jack!" She whined, standing up from her seat at the table and retreating to the far corner of the kitchen.
"Ha! I saw it! You are, aren't you? You're all padded up right now, like a little baby!"

Jack had managed to catch peek up Ellie's skirt at her white and purple pull up. She didn't mind wearing skirts at the weekend, because she tended not to go out or socialise much. However at school she would only wear trousers. She couldn't risk her skirt flying up and someone seeing her diaper.
"So what, have you peed it yet today?" He asked pressingly, closing in on her.

Ellie felt herself blush. And as if all the forces of the universe were against her, she felt a warmness begin to spread around her crotch, causing her diaper to billow out between her thighs.
"No way," Jack said, mouth agape. "You're not wetting it right now!"

He went down onto all fours and put his ear towards Ellie's crotch. He heard a faint hissing.
"Holy shit! You are! You're pissing yourself right here, right now in front of me!"

Ellie couldn't move. She had frozen on the spot and the only muscles that were relaxed enough to move were the ones that were causing her to piss.

Ellie started to cry and ran out of the room. Feeling her diaper squish between her legs as she ran.
"That's right, little baby." He laughed as he sat down and started eating the rest of her omelette. "Run off and go and get yourself changed."

Ellie went back upstairs hungry and dishevelled. She couldn't face Jack again any time soon. He was a monster. He brought such a feeling of anger and anxiety that Ellie felt sick, and was probably the reason she peed her diaper.

Without rush or much motive, Ellie changed herself and threw her wet diaper into her diaper pail, which was gradually getting fuller and fuller. Before long she'd have to get it emptied.

She thought about her incontinence and how embarrassed it made her. A few years back she had been offered pills that could have worked, but they were no good at all. They just managed to made her drowsy and dopey, and if anything made her wet more!

Then the idea struck her. She knew just how to get back at her brother...

*

Ellie had to wait until that night to enact her plan. And boy, was it a plan. Her mother only worked on weekdays, so given it was a Saturday, she took her mother's keys to the chemist out of her jacket and made her way as fast as she could to the high street. Luckily, when she got there, there was hardly anybody about. Most people were out having a good time, not waiting outside a closed chemist. The coast was clear, so she unlocked the door and made her way inside.

Ellie wasn't sure how good the shop's security was, but she knew it was pretty low end, so it wouldn't be anything fancy. Either way, Ellie had dressed all in black and was navigating about the shop with a torch in hand.
"Where is it..." She mumbled as she looked about the shelves behind the counter, where all the drugs were kept. That's when she found it.
"Bingo." She smiled mischievously to herself as she took the box off the shelf. "Lithium Dichlorate." She read. Thanks to her research on the Internet, she knew that in just the right dosage, Jack was going to be putty in her hands...