Bath Time For Markie

By Cassie
puericil@hotmail.com

Copyright 2025, all rights reserved

[1,690 words]

* * * * *
This story is intended for ADULTS ONLY. It contains explicit depictions of sexual activity involving minors. If you are not of a legal age in your locality to view such material or if such material does not appeal to you, do not read further, and do not save this story.

* * * * *




"It's time for your bath, Markie," Kayla said. Her voice was sugary sweet but with a hint of condescension that Mark had got used to from her. She was only eleven, but she always seemed so much older, so much more mature than him. It was annoying, but he didn't argue. He knew it was useless.

"Come on, Markie," she said again, this time her voice a little firmer. "You don't want to be dirty, do you?"

Mark, who was thirteen (or thirteen going on eight, as Susan liked to say), felt his cheeks redden. He didn't want to be dirty, of course he didn't. But he also didn't want to be bathed by his sister. He felt like he should be able to do it himself. But their parents had insisted that until he was deemed mature enough to be trusted with his own hygiene, she would help him.

He slid off the couch and followed her into the bathroom.

She was had already started drawing the bath, filling it with bubbles and toys that were too young for him. But he didn't say anything. He didn't want to seem like a baby.

Kayla helped him undress, her hands moving swiftly and assertively. He felt a twinge of embarrassment as she confidently pulled down his underwear, exposing his bald penis. She had seen it before, of course. But it was still embarrassing, particularly when she was acting so... motherly about it.

"In you go, child," she said, stepping back and patting his naked butt to encourage him to step into the tub.

He climbed in, feeling the warm water envelop him. It was comforting, but the feeling was ruined by the knowledge that his sister was watching him, her eyes on his naked body. He sank down into the water, trying to hide.

Kayla rolled up her sleeves, picked up the handheld showerhead and got him all wet. He closed his eyes for a moment to keep the water from getting inside them. She was smiling at him when he opened his eyes again. "You look cute when you're all wet like that, with your eyes closed," she told him warmly.

She soaped his hair. Then she got him to stand up, squirted a dollop of soap onto her hand and began to scrub his back, her movements firm and efficient. He flinched a little at first, but her touch was gentle.

"Relax, Markie," she said. "You're kind of tense."

He didn't respond, just focused on the mirrored cupboard to his left.  Seeing himself naked there, and seeing her washing his body, made him blush. She was seeing everything! He couldn't even remember seeing her naked. Maybe when she had been very little. But he sure could remember her seeing him naked.

He was brought back to reality when she reached around to wash his chest. Her hand brushed against his nipple and he felt a strange sensation, one that was uncomfortable and somehow exciting at the same time.

"Don't worry," she said, her voice quite kind now. "I'll be gentle."

She washed his chest. Her hands then moved down to his stomach, and he tensed again. But she just chuckled.

"Don't be silly, Markie," she said, some playful sarcasm in her voice. "It's not like I haven't seen you naked before, is it?"

And then she was touching his penis. She soaped it up, but she was taking her sweet time about it. He felt it go hard. This was the most embarrassing thing ever! He quickly covered it with his hand.

"What are you doing?" he demanded.

"What does it look like I'm doing?" she said, her eyes sparkling with amusement. "I'm washing you, silly boy." She gently removed his hands from his penis.

"I can do it," he said, his voice shaking.

"Sure, I'm sure you can," she said soothingly. "But I'll  do it for you this time. You know, because I'm your big sister."

"You're not, I'm older than you!"

"I know, silly, but that's not what I mean. I mean that I'm the big sister because I'm the most mature one. Girls mature faster than boys, don't you know? That's why Mom and Dad don't let you bathe yourself, and why I'm trusted to help."

He didn't say anything, just nodded stiffly. He had been told that many times.

Her hands moved to his bottom, and he felt her soaping up the crack of his bottom. He clenched his cheeks together, but she just giggled.

"You're so cute when you're shy," she said. "But we still have to get you nice and clean, don't we?"

Her fingers slid between his cheeks, felt a brief contact against his anus and for a moment he thought she was going to put her finger inside. He held his breath, but she just washed the outside, her movements slow and thorough.

"Good boy. You're doing such a good job," she said. "But we're not done yet."

With that, she took his hand, soaped it and guided it to his penis. "Here," she said. "You wash this part."

"But you already washed it!"

"That's OK, I want to watch you do it yourself to see if you can do it properly," Kayla explained.

He felt his face go even redder as he took over the task, taking his semi-erect penis in his hand. She watched him attentively, her eyes never leaving his crotch.

"Good boy," she said with a smug smile when he was done, as if he were a toddler learning to wash his own hands. "But remember, you have to get it all clean. Everywhere. Even under the piece of skin at the tip."

She squirted more soap into her palm and took his penis again. Her penis, he had almost thought. She handled it so confidently that it was almost as if it belonged to her, not to him.

"Here, let me show you, little bro."

Markie looked down with a murmur of thanks, trying to ignore the way his penis twitched in her hands, under her gaze. She began to wash it again, his body trembling slightly with embarrassment. He felt like such a baby, being told what to do by an 11-year-old girl, being washed by her. But she had a way of making him feel so small, so insignificant, that he couldn't help but obey her every command.

"That's it," she said, her voice cooing like a mother's. "Just like that." She leaned in closer. "We have to make sure we wash the underside of this piece of skin, Markie. It's called your foreskin, and it can get really dirty under it."

He nodded, feeling even more embarrassed as she washed under his foreskin. She leaned in closer still, so that he could almost feel her breath hot on his skin. "Good boy," she murmured, and he could feel his penis growing harder despite his shame.

Kayla stood up and watched him with an amused expression, enjoying the power she had over him. She knew he was embarrassed, and she enjoyed her power. "You know," she said, "maybe soon you'll be ready to bathe yourself on your own."

Markie looked up at her, hoping for some sign of genuine praise, but she just winked at him.

"Now, let's get those balls of yours clean," she said, her voice businesslike. "They can get really dirty too, you know. Come on, let's see you do it."

He sighed and let her pour a bit more of soap on his hands. Then he tentatively washed his testicles. They felt heavy and sensitive under his touch, and he couldn't help but imagine her doing it for him. He looked at her and her eyes were following the procedure attentively.

"Good boy," she repeated when he was done, patting his bare bottom.

Then she turned back to the sink, rinsing out her hands. "Alright, now let's get you rinsed off," she said, turning the showerhead back on and spraying him with warm water.

The water hit him like a gentle caress, washing away the soap and the remains of his dignity. He felt the tension in his body begin to ease, despite his humiliation. It was strange, but somehow, being bossed around by his young sister was oddly comforting. Thank goodness the boys at school could not see him.

"Good," she said, nodding in approval. "Now, let's get you dried off." She handed him a towel and stepped back, watching as he awkwardly tried to cover himself.

"Remember, Markie," she said, "always make sure to dry down there thoroughly before getting dressed. You don't want to get your undies wet like a little boy, do you?"

He mumbled something incoherent, too embarrassed to form words. She just laughed and patted his head. "You're learning," she said. "Now, let's get you dressed, and maybe we can play a game or something."

As he finished toweling off, he couldn't help but feel a strange mix of emotions. On one hand, he was humiliated beyond belief. On the other, he felt a strange sense of comfort, of belonging. He didn't know why, but he liked the way she talked to him, liked the way she made him feel like he was her little pet. He shouldn't like being treated like such a baby, he knew that. But somehow it felt right. It felt right that Kayla was in charge, and he wasn't.

As he followed her out of the bathroom, his penis still half-hard inside his PJs and his cheeks still flushed with embarrassment, he found himself looking forward to whatever she had planned next. He knew that whatever Kayla decided to do to him, he'd let her. Girls are in charge, after all, because they are more mature than boys.





(The End)