By SubstituteWriter
someassembly1964a@gmail.com
Copyright 2026 by SubstituteWriter, all rights reserved
[4,477 words]
*
* * * *
This
story is intended for adults only. It contains depictions of forced
nudity,
spanking, and sexual activity of preteen and young teen children for
the
purpose of punishment. None of the behaviors in this story should be
attempted
in real life, as that would be harmful and/or illegal. If you are not
of legal age in your community to read or
view
such material, please leave now.
Big Sister’s Submission Part 4
(Becky’s plan is set in motion during a visit with her friends.)
“You freak, put on my tank top and jeans and that’s all! And be kneeling on your knees. We’re almost there!!!!”
I read the text and immediately raced downstairs to the living room to collect the top and jeans. I heard the door
opening as I was running upstairs and was able to close my door quietly, throw on the tank top and jeans and kneel
back on my knees with my hands behind my head, facing the door before I heard my doorknob turn.
Becky came in alone.
“Put your hands down little one. Dani and Amy are downstairs and I need you to come down and serve us sodas. We’ll
keep our secret for now but if you’re not nice, I’ll make you strip naked in front of them.”
“Yes Mistress,” I said. I felt my face turn red.
“Plus, you are going to be very agreeable with Amy, is that clear?”
“Yes Mistress.”
“Get up and let’s go.”
I rose and joined my little sister on the journey down the stairs. Just as we entered the living room, Becky whispered
in my ear “You put the tank top on inside out.”
I felt my cheeks burn with embarrassment. It was bad enough without the bra; now I had to look like an idiot.
Becky took a seat on the couch next to Dani. Amy was sitting in a chair nearby.
“As long as you’re up could you bring us something to drink Bobbi?” said my younger sister.
“Yes, M--. I mean, sure, no problem.” The temperature in my cheeks rose as I turned toward the kitchen. I felt my
nipples harden and wondered why I was feeling a little aroused.
I could hear them talking softly and giggling while I prepared a tray with three glasses filled with ice. I filled a
ewer with lemonade and brought the tray into the living room. I felt like a servant and again felt warm where I
shouldn’t feel warm.
I placed the tray on a table in front of the couch and handed out the glasses. I poured the lemonade for my sister and
Dani. I turned to Amy and was met with a strange look; something like a half-smile, her eyes clear and wide. I noticed
she licked her tongue over half her lower lip.
I shuddered a bit, not so much in fear. It felt like she was looking into my soul. My nipples, clearly hardened, tried
to poke through the front of my sister’s tank top, already tight against my bare chest. I smiled at her and then
reached out with the lemonade. Amy held her glass close to her body, forcing me to lean over to pour; my chest at eye
level. I made eye contact as I finished pouring. Her eyes sparkled and conveyed happiness. It gave me goosebumps and a
tingly feeling that swept through my body.
I left the ewer and tray on the table and turned toward the stairs.
“Could you stick around a sec, babe?” Becky inquired.
“Sure, Becky. Do you need something else?”
“No, but we were just talking about how you and Amy were lab partners in Advanced Life Science last year. She says you
got along just fine. Was it OK for you to partner with a freshman?”
I’m sure my whole body blushed as I recalled thinking it would be the worst experience ever. As the year progressed,
though, it was clear she was a lot smarter than me in science.
“Well, you know that both of us got an ‘A’ in the class so I suppose our partnership was very successful,” I answered
as I glimpsed at Amy, who was grinning like she just swallowed the richest piece of chocolate in the world.
“She makes a great partner,” Amy said, making me tingle a little. “I really enjoyed our time together. I was hoping to
be in chemistry with her this year.”
“Too bad she’s not so smart in science,” Dani interjected.
“You know, my tank top would look a lot better if you had it on right,” Becky said. “You need to fix that. Let me
help.”
Becky got up and told me to raise my arms, just like when we were younger and our mom would tell us the same thing.
I knew Becky was ordering me to do . She started rolling the shirt up and over my breasts. She pretended it was stuck
and I had to keep my arms up for a few extra seconds before she got it off. I quickly covered my breasts, hoping
neither Dani nor Amy noticed the hardness of my nipples.
Becky made a big deal out of getting it turned out the right way before repeating her request that I again raise my
arms. At least this time she didn’t delay, quickly covering my chest and pulling it tighter, allowing the fabric to
brush against my sensitized nipples. Then she playfully grabbed my breasts before stepping away.
“So, what do you say?” she asked.
“Thank you for helping with my top Becky.”
“You’re welcome, Bobbi. You can go to your room now.”
“Thanks,” I said, staring daggers at Becky for the humiliating stunt she just pulled. She merely smiled in return. I
took a quick glance at Amy, who still had that stupid grin on her face; her eyes following me up the stairs.
I started pacing around my room after closing the door. I was angry that my sister put me on display like that and
especially angry that I didn’t resist, taking orders for drinks and then dismissing me like that. I know we were all
girls but that did not make it any easier. It was my 15-year-old sister showing them how she can order her older
sister around.
I had to go to the bathroom to splash cold water on my face, helping me cool down. When I looked in the mirror, I saw
the redness of my cheeks and blushed even more.
And Amy! I’m sure she was just being nice about being my partner; it was embarrassing to me, even adding how she’s
taking chemistry and I’m stuck in biology, which I failed as a sophomore. And the way she kept looking at me! I got
goosebumps all over again. There was something else, though, and I felt the warmth and tingly feelings when I thought
about her staring at me.
I sat on the floor, cross-legged, and tried to settle myself. I took a few deep breaths and began feeling a little
better. I needed to get out of my sister’s clothes and unsnapped my jeans so I could breathe a little easier. I was
about to slip them down my legs but a knock on my door stopped me and I quickly snapped them together again.
“Come in.”
Amy shyly entered the room. We made eye contact and having to look up at her sent a shiver down my spine.
“Hey Bobbi, I just wanted to talk to for a few minutes if that’s okay,” she said.
“Of course it is Amy.” I was trying to be as ‘agreeable’ as I could. I didn’t need any more trouble with Becky. I got
up and sat down on my bed, my bare feet dangling over the edge. I pointed to the chair at my desk and she took the
hint, sliding it over in front of me and sat down, her hands in her lap.
“So, Amy, what would you like to talk about?”
“Hmmm, well, how is Biology going this time around?”
“I’m getting a C-minus so far.”
“You know. I could help you with that,” she said. “I passed Biology at summer school before I came to Grace High.”
“That’s nice of you to offer but I just need to keep my average where it is so I can graduate.”
We fell into an awkward silence. I could see that Amy wanted to say something and I hated the silence. “Amy, you don’t
really want to talk about Biology do you? Did you want to ask me something? It’s cool, you know, you can ask me
anything.”
Amy looked at me, her smile all but disappeared. “Yeah, I asked Becky why you acted the way you did downstairs. I
mean, you got drinks for us and then allowed Becky to redo the tank top right in front of us. She said to ask you.”
My body temperature must have risen a few degrees as tingles filled my entire body from head to toe. I stumbled all
over my words as I tried to think of something clever.
“Well, you know, uh, sisters, uh, you know, they do things for each other, that’s all,” I said, knowing she wasn’t
buying any of it. She pressed her lips together and made a humming noise.
“How often does she adjust your clothing in front of others?” Amy asked.
“Well, I mean, yeah, that was the first time but … “
“So, here’s my real question Bobbi: Do you always do what Becky asks? I get she’s more confident than you are, but you
are older,” Amy asked.
“Look Amy, she’s my sister and I love her to death, so, yeah, I’ll do a lot of things she asks.” I sounded angry but I
was more frustrated than anything. I didn’t want to talk about it.
“I didn’t mean for you to get so whipped up about it,” Amy responded. “All I really wanted was to hear you say you
liked helping Becky. I think it’s cute. I’m an only child, so I don’t have anybody to help me.”
“I’m sorry Amy.” I was trying to be cool and calm about it. “I’m not really upset you asked the question. I was
frustrated at myself for letting her change the tank top. It was her tank top, after all, and a size too small for
me.”
“You should have seen your face when she pulled the shirt off.” Amy was giggling. “You looked so shocked and got so
red. I thought it was funny. I mean, we do see other girls in the locker room without thinking about it. But your
reaction was priceless. I wish I had a picture.”
I felt even more foolish at her description of my reaction. I must have looked funny, so I started giggling with her.
“You helped me calm down Amy, thank you for that,” I said. “I shouldn’t have taken it so serious.”
“I’m glad I could help,” Amy said. “Hey, do you think we go have coffee together some time or maybe go to the library
together?"
I only hesitated for a moment before agreeing to either situation. Amy was a good kid and I did feel like I should be
nice to her.
“OK, how about tomorrow, right after school, at “Nuts About Coffee,” right near the school. That would be fun,” she
said.
And so, it was agreed. I’d have a coffee with her and that would be that. I never thought it would go beyond that …
until it did.
End of Part 4
Big Sister’s Submission Part 5
(Becky readjusts Bobbi’s rules and there’s a slight twist that may lead to mischief)
Becky walked into my room after her friends left and immediately demanded I remove her tank top and jeans and assume
the position: Kneeling, with my hands behind my head.
Becky took a walk around me and sat on my bed. She stared at me without speaking, moving her eyes over my naked body.
I made my eyes were on a spot of the rug in front of me. The whole procedure made it five times more embarrassing.
My younger sister was in charge of my life now, and while it was humiliating due to the two-year age gap, it was also
kind of exciting. For most of my life, I was the follower. I didn’t like making decisions or ordering people around. I
always wanted to be the assistant, taking orders from the boss and making sure those orders were carried out.
In this scenario, I was taking orders from Becky and then making sure I carried them out. Having to take orders from
my sister was embarrassing but also exhilarating. I didn’t have to worry about what to do next. I simply responded to
her demands.
“You had a nice chat with Amy, did you little one?” Becky began.
“Yes, Mistress, it was OK.”
“Just OK? Amy told me you two set up a date for tomorrow after school.”
“It’s not a date; it’s only coffee. I’m just trying to be nice,” I said, trying to squash any rumors that might come
out.
“You’re not being nice to me right now,” Becky said. “I think you suddenly forgot how to address me. That’s a
punishment.”
“Oh, come on!”
“Two punishments,” Becky said. “You want to try for anymore?”
“No, Mistress, I’m sorry.” I had to calm myself down quickly.
“What exactly are you sorry for?”
“I’m sorry I didn’t address you properly, Mistress.”
“And?”
It took a few seconds. “I’m sorry I raised my voice to you, Mistress, and I’m sorry you have to punish me, Mistress.”
“That’s so much better little one. Please stand up and lay yourself across my lap.”
I jumped up and quickly got over her lap. I wasn’t going to get punished any more than necessary.
“OK, little one, you will count each slap and thank me properly. Understood?”
“Yes, Mistress.”
She rubbed my bare bottom a few seconds and then delivered a spank that echoed around the room and sent a wave of pain
into my backside.
“Ouch, one Mistress. Thank you, Mistress.”
SMACK!
She hit the same sore spot again, doubling the pain.
“Two, Mistress. Thank you, Mistress.”
Then she delivered two swats in succession, also in the same spot on my right cheek. It felt like she poured lava on
my butt.
SMACK! SMACK!
“Three and four, Mistress. Thank you, Mistress.”
She moved to the other cheek for the next four swats and I felt relief … until I realized how hard and painful the
swats had become, equalizing the heat and aching on both cheeks.
Becky took turns on each check for the final four swings. My rump was toasty warm and she had to slap my hands
whenever I tried to rub the soreness away. I felt like a baby getting spanked by her mother except the mother was my
15-year sister and I was the 17-year-old baby.
“Corner time for you little one,” Becky said softly, helping me off her lap.
I walked to the corner of my room closest to the door and stood with my nose against the wall and my hands on top of
my head.
“I think 45 minutes will be enough little one,” Becky said. “That will give me the time to explain some of the new
rules.”
I had done a good job of holding back tears while laying across her lap, but when she mentioned new rules, several
tears streaked down my face. I knew they weren’t going to be good rules, at least for me.
“We have to adjust some things now that you’re seeing Amy,” she said. “So, I thought it might be fun to play a little
game. I’m not going to tell Amt, or anyone else for that matter, about your submission to me. At the same time, I am
ordering you to obey Amy like she’s your mistress. That means never saying no to her, ever. That will just be between
you and me, little one. Amy may figure it out but it won’t come from me. I promise.”
I wished I could say something in protest but I couldn’t open my mouth. Instead I had to deal with an overwhelming
surge of what seemed like a mild form of electricity. My entire body filled with sensations of shame, warmth and
vulnerability in equal measures. It was something I never felt before and it seemed to last for a full minute. I
didn’t know how to process it. My mind exploded into tiny pieces and I had to collect them all to study and deal with.
“OK, with mom and dad coming home tomorrow, I’m adjusting your dress code. You will remain completely stripped down at
all times while in your room. You can certainly have some of your friends over, but that means seeing you without
anything on. Get it?”
I nodded my head.
“Good. As for the rest of the house, you’re allowed a shirt, no bra, no shoes. You can wear any kind of underwear, but
nothing else. You’ll just have to get used to lounging around like that. In case of visitors, you can wear shorts.
That’s only when adults are around. If it’s my friends, or your friends, it’s just underwear. Yes?”
I nodded again, unwilling to give her any opportunity to further punish me. I remained silent as I contemplated my
situation moving forward.
“I’m going to be a little generous and let you sleep on your own bed. One thing though, take all the sheets off and
throw them on the floor. You’ll have to make your bed every morning. It should be fun knowing you’re making a bed
you’ll never sleep in. OK?”
I nodded my head again, wondering how far she was going to take this. I didn’t think I would feel any more humiliated
than I have but I was wrong. It kept building to new heights.
“Also, since I won’t be spending as much time in your room, that is while our parents are here, I’m going to use the
camera on your computer to keep track of you. I’ll make so it just between our computers, at least for now. I’d hate
to think someone could hack into our system. Agreed?”
Maybe I was just a baby, a teenaged baby who must be monitored at all times. Reluctantly, I nodded my head.
“I’m also adding time for you in the corner,” she said. “I’m dismissing the second spanking. I’ll come get you when
dinner is ready. You’ll take care of the dishes and then go right to bed. You have to be alert for Amy tomorrow.”
End of Part 5
Big Sister’s Submission Part 6
(Bobbi and Amy have their first date and set up a second one)
I kept staring at my computer while trying to deal with the fact I was naked, with no covers, and knew my camera was
betraying me, sending a live signal to Becky’s computer, further humiliating me.
I should end this stupid game, ignore everything and just do things my way. So why was I having difficulty saying no
to my younger sister?
Becky’s dominant personality overwhelmed me, that’s why. And if I’m being honest, I actually enjoyed not thinking for
myself, even if it meant feeling embarrassed at times. I felt edgy, alert, alive! My only worry the rest of the
semester was to graduate from high school.
Then I started thinking about meeting Amy at the coffee shop after school. Becky gave the impression this was more
serious than I envisioned. To me, it was a one-time thing. Now I have orders to never say no to her. That led to so
many scary thoughts and possible humiliating situations that I shuddered.
I liked Amy well enough but she’s Becky’s friend, not mine. Maybe I was a little curious about girls but that’s all it
was: curiosity that I would not act upon. And never with someone younger than me. It felt sticky for lack of a better
description.
If I had any feelings toward girls, it would be someone my age, like Julie, an athlete and very smart. She was likely
to be our valedictorian and, to me at least, the most beautiful girl in school. My heart skipped a beat every time I
saw her.
When I walked out of the house the next morning, everything was normal. I went through the day, dressed in a simple
blouse and modest skirt, without seeing Amy.
I was out of school an hour before Amy; being a senior had some benefits. The “Nuts About Coffee” coffee shop was less
crowded than normal and I was able to grab a small table in the corner. I bought a Zero Sugar drink to pass the time
until Amy’s arrival.
I was the last one to notice Amy when she entered the shop. I heard the murmurs and looked up to see Amy in a pleated
denim skirt, paired with a simple knit, baby blue, sweater, and wearing brand-new platform sandals.
What really shocked (and impressed) me was her blonde hair, which was styled in natural waves. I knew she had to get
up early to make sure her hair was in order. The addition of make-up, which gave her kind of a wazy, yet elegant, look
added years to her age.
Amy looked around and waved to me, walking over with her head held high. She seemed unaware of the attention she was
getting from the rest of the room.
She sat down across from me, ignoring the surprised look on my face. “This is exactly the table I wanted for us,” she
said, her bright red lips drawing my attention.
I kept ogling her until she waved her hands in front of my face. “Earth to Bobbi,” she joked.
“Oh sorry Amy,” I said, shaking my head to the clear the fog. “You look like you have somewhere important to be. You
are really dressed up. It’s nice.”
“Thanks Bobbi, but this is the only important place I need to be. You look pretty good too.”
She lied. I was dressed normally, more of a scruffy look than anything even remotely decent.
After a few minutes of small talk Amy produced a gift card from the shop and asked that I place the order for the both
of us. “Get whatever you want Bobbi. It’s my treat.”
She asked for a Vanilla Bean Crème Frappuccino and I stood up to get in line. I was only going to get a house coffee,
large. I looked at her and asked what size Frappuccino she wanted, tall, grande or venti.
“I’ll take the little one,” she said. “Thank you, Bobbi.”
My body froze at the phrase “little one,” a nickname my sister gave me and one I thought was special between us. Now I
wondered if Amy knew about me and Becky’s arrangement.
Amy went back to reading her e-mail like it was no big deal but it raised my anxiety level and I wondered if my sister
had betrayed me. I wanted to brooch the subject with Amy but that could turn out disastrous for me.
The woman behind the counter interrupted my thought process, asking if I was ready to place the order. I blurted it
out and felt like an idiot having to be prodded by the barista. After handing her the gift card, I slunk back to the
table to want for the order.
Amy lifted her head and smiled at me as I sat across from her. “Why so glum?” she asked. I responded with a vague
answer about schoolwork.
Amy tried to lighten things up and actually got me smiling. Our order was ready and I jumped up to retrieve, placing
the Frappuccino in front of her and taking my grande coffee.
Our conversion was light the rest of the afternoon, with subjects ranging from school to make-up and jewelry. I
relaxed again since Amy didn’t insinuate anything and I didn’t bring up the “little one” thing.
The place thinned out while we were talking and when I finally noticed the time, I realized I had spent over two hours
with Amy and I never got bored.
“Hey, we better get going,” I suggested as I slid my chair back. Amy quickly put a hand on top of my hand, holding me
in place. It surprised me and I didn’t move my hand away.
“Look Bobbi, this was a lot of fun,” she said, pulling her hand away when she started talking. “I was hoping we could
maybe get together again tomorrow. Would you like that?”
I was reluctant about it but knowing I had to say yes and then tried to sound cheery. "Yeah, sure, that’s great Amy.
I’d like that.”
“Could we meet in the library after school?” she asked. “I need a couple of things for a project.”
I agreed and we both rose. Once we were in front of the shop, it became awkward. She kept eye contact with me but
seemed a little nervous. I had the feeling she wanted to hug. She took a step and opened her arms and I accepted her
gesture, rubbing her back a little bit.
“Thank you so much Bobbi, you don’t know what this means,” she said.
“I had a lot of fun too. And maybe we’ll have fun again tomorrow.”
We each went our separate ways.
My parents were home when I got there and hugged both of them before saying I was a little tired and wanted to lie
down,
Less than a minute later, Becky stepped into my room. She looked angry and folded her hands across her waist. I had
forgotten to take off my clothes. I apologized and swiftly removed my clothing and knelt down before her.
“You’ll be punished for that,” she said. “But right now I want to hear about your date with Amy, little one.
“It wasn’t a date,” I said and yet I was blushing as I mentally went through our earlier conversation.
It’s not easy to talk about another girl while naked and kneeling. I was embarrassed but able to tell Becky almost
everything, including the “little one” incident.
“First of all, I did not tell her anything,” said Becky. “That’s purely coincidental. Second, how did it make you feel
when she said it?
“I felt like a six-year-old girl who got caught doing something wrong. I felt so vulnerable, like she knew everything,
and I was going to get punished.”
“Thank you for your honesty, little one, but do I really have to remind you to call me Mistress? That’s twice now.”
“I’m sorry, Mistress.”
“This time, I’ll let you pick a punishment and it better be good. Just think about it. I want to know if you’re going
to see her again.”
“Yes Mistress, we are meeting in the school library tomorrow.”
“Awesome. Take some time to consider your punishment. Dinner should be ready in an hour. Remember your dress code when
coming downstairs.”
“Yes, Mistress.”
End of Part 6