His sister's birthday

Helena woke up at Midnight. Her head swiveled to the window, and her eyes zoomed on her clock. Sweet. She was officially 18 years old. She had been told for a month or more now that she was getting a unique, once in a lifetime gift. She had no clue what it was going to be but she wanted to enjoy every moment of today. She had a party planned but never could have guessed how awesome today would be.

Helena's earliest guests were her best friends, who had texted her just after she woke up. Sara and Anna had always been there for her. All 3 were nightowls, and she invited both over before it was even 1AM.

Her cousin, Elise was about the same age and staying over for a week.

Everyone arrived before noon, including June, the girl her brother crushed on, and June's boyfriend Bob, who Helena crushed on, despite or because he often bullied her brother, Pinky who was the only exception to this party. He was technically a few months older than his half sister, but was smaller so she always called him her little brother just to tease.

He was still napping in his bedroom, while they all enjoyed breakfast without him.

Helena's mom barged into her brother's room, loudly asking "Pinky. Did you pee your bed again?!"

"No!" Pinky was wide awake and knew there was a loud birthday party, which now laughed at him.

"No? Not like last Thursday just before school? Do you remember that? Well do you!?" She shouted after a silence.

"Yes.. I'm sorry."

"You peed the bed! Yes you did, you lying little boy! Well. Toss your blankets in the laundry. Undress, take those dirty clothes off. No. Do it now!"

While still humiliating, Pinky considered it a very rare grace that his punishment be delayed, and luckily, the birthday party wasn't going to get a long view of him from his bedroom, down the stairs, to the laundry in the basement, if they stayed in Helena's bedroom. No such luck. As soon as he stuck his head through door, he saw Anna and Sara laughing with Helena right outside her bedroom door, and others chilling through the the hall. No one could even see his ass yet and it was already humiliating!

Pinky held his breath and marched forth. He gasped periodically as girls joked about him humping his laundry.

Half the guests got a long look at his bare butt as he held his laundry basket im front of his genitals. He walked down 2 flights of stairs with his bare bottom exposed to anyone who wanted to gawk and laugh.

He hurried upstairs with his hands over his genitals.

"Ah-ah! Not so fast, little mister Pinky. We're holding off on punishing you for wetting the bed, today. We'll do that tomorrow." Pinky's step mom smirked behind him, stopping him in front of everyone. "We let you nap in. Now come sing happy birthday to your sister."

All eyes were on Pinky.

He walked timidly to his sister who smirked at him.

"Awww, little brother, did you pee your blanket again?

"Shut up."

SLAP! Pinky's older sister spanked him

"Hey! You don't tell your sister to shut up, and you especially will be nice to her on her birthday."

Pinky's mom walked in and pinched his butt, saying. "Pinky, be glad that today you won't be punished. You'll get spanked tomorrow for wetting your bed and being bratty to your sister. Today. We have a very special announcement for your sister. Helena, our gift to you, is that we have thought about and decided, you're right. You shouldn't need us to intervene when Pinky is being a naughty little boy." She spanked him, he winced and thrust forward but didn't move his hands. "You're more mature and wiser than him, even though he's a few months older, you're mentally years ahead of the brat. And what's more. He has always been so rude to you, so tonight. Helena, for the rest of today, Pinky has to obey you as though you had parental authority. Everything you say, he must follow and do as you command. He has no rights, and we are trusting custody of him to you for your birthday. Feel free to be mean to him. This is our way of making up to you how stupid and selfish my little boy is. This evens things out, since he was mean to you, so you don't need to find a rule he broke to give him a spanking."

Helena's face lit up. Her step mom continued.

"Not just when you feel he needs to be punished. If you find it fun, go ahead. Just don't get arrested."

"Really?"

"Yes, Helena! That's just to make things right for how bratty the naughty boy is. But your birthday is about more than getting even, you should really have some fun!"

"Any birthday wishes?" June chirped.