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...