Becoming Daddy’s Good Girl 9: Bratty Sister Transformed by mypenname3000

“That my pussy will satisfy my daddy’s cock tonight. Because I’m your good girl.”

Daddy grinned again, joy in his eyes.

My own heart fluttered with the emotion. For a moment, the pain in my nipples and clit faded. I didn’t feel the discomfort of the butt plug lodged in my asshole. There was only the delight that our entire family was here, sharing this moment.

“Fuck,” Alice gasps as Mommy clamps her clit. My sister shivers, her face contorting as she fought to control the new pain shooting through her body. “Fuck.”

“Language, young lady,” Mommy said, a smile on her lips, wet with Alice’s juices. But there was no heat in her admonishment as there would be outside of the dungeon. “You are such a naughty girl, Alice. Letting your wicked mommy attached clamps on your hard nipples and cute clit. All while Daddy watches you. Look at how hard you make him, slut.”

Alice’s eyes fell on Daddy’s cock.

“He’s going to pop your cherry with that huge dick,” Mommy purred. “And you’re going to experience such pleasure. You’re going to gasp and buck. You’ll be his whore. You’ll love your daddy’s hard cock fucking your barely legal cunt.” She rubbed Alice’s pussy. “You are dripping wet for your daddy’s cock, aren’t you, slut?”

“So wet, Mommy,” Alice moaned.

I shuddered. My pussy ached. I wanted to rub it. My sweaty palms clutched my knees. I held on tight, fearing I would be a bad girl if I let go. My bowels clenched on the butt plug. I shifted, trying to ignore its presence in me, the way it stimulated my sphincter, mixing a splash of pleasure into the throbbing agony of the clamps.

Then Mommy lifted up a butt plug. “And you know what this is, don’t you, slut?”

“A butt plug, Mommy.” Alice swallowed. “I’ve seen it in porn before.”

“Like nipple clamps?”

Alice nodded. “I like watching BDSM porn. Especially the spanking and whipping ones.”

Mommy laughed and moved behind her. She picked up the lube and applied a generous amount onto the butt plug. She pressed her large breasts into Alice’s back, nuzzling at her neck as she slid the toy between my sister’s butt-cheeks.

My bowels clenched on my butt plug as Mommy pressed forward with the red toy. My sister’s eyes widened. She moaned, arching her back, thrusting her firm titties forward, the nipple clamps waving and bobbing.

“That’s it, slut,” Daddy growled as Mommy worked more and more of the butt plug into Alice’s ass. “Take it. I can tell how much you love it, whore.”

“I do, Daddy,” Alice moaned. “Oh, yes, Mommy. That’s…oh, fuck!”

The butt plug popped all the way in, the handle sticking out. My sister squirmed. I grinned at her. “Thicker than my finger?”

“So much thicker,” she moaned.

“Wait until Daddy fucks you back there. You’ll really explode.”

Alice nodded her head. “I can’t wait. Oh, I know it’ll be wicked. Mmm, yes, Daddy. I want to use every hole of my body to satiate that huge cock. Please, please, fuck me now. I need your cock in me. I need it so badly.”

“When I am ready, slut,” he growled. “June, put the spanking bench before me. Melody, help your mother like a good slut.”

“Yes, Sir,” Mommy said as I moaned, “Yes, Daddy.”

We both rose. My nipple and clit clamps swayed. Fresh agony lanced through me as I walked, so aware of the butt plug filling my ass. I reached the spanking bench, a padded bench, curved so a woman could bend over it, and with built in adjustable leather cuffs to bind the naughty slut in place.

I groaned as we lifted, my bowels clenching on the butt plug and my breasts jiggling. It was heavier than it looked. We maneuvered it into the center of the dungeon and set it before Daddy. Then we knelt beside him while his hands rested on our head. Daddy stared at Alice as she knelt, squirming, undulating.

Daddy moved. He seized Alice by the air and yanked her to the spanking bench. She gasped in pain as he threw her down on it, her nipple clamps pressing into the padding and digging into her tits. I winced in sympathy as she gaped in pain.

“Daddy,” she moaned. “That hurt so much.”

“And you love it, slut,” he growled. “But if this is too much, say the words and it all ends. You can leave the dungeon.”

“No!” Her words were loud, defiant. “No, Daddy. I am your good girl.”

Mommy let out a soft, tear-filled sigh, the type only a mother can make when one of her children has done something so sweet and loving. I reached out and took her hand, giving her a smile as she wiped at her eyes with the other.

Daddy seized Alice’s hands and quickly manacled her to the spanking bench. He adjusted the length of the chain, pulling her ams taught. Then he did the same to feet, binding them spread apart. He turned the bench so her cunt face us, dripping wet, the clamp soaked and a puddle forming on the leather.

“Sir, how would you like me prepared, sir?” Mommy asked. “Unless only our daughters get to play.”

“Careful, slut,” Daddy growled. “I will cane your ass so hard you won’t be able to sit for a week if you keep up that tone.”

Mommy shuddered in orgasmic delight.

“Fetch the clothespins, slut.”

“Yes, Sir,” Mommy groaned and scurried off to grab the large, plastic Ziploc bag—the type she used in the kitchen for freezing chicken breasts or steaks or pork chops after shopping. She came back and handed them to Daddy before stretching out on her back, her hands behind her head, her legs spread wide.

My eyes widened as Daddy knelt and smacked her breast with his hand hard. She groaned, shuddered, and writhed. He smiled and pulled out the first clothespin and clamped it on the edge of her breast, pinching her skin. Mommy winced and grit her teeth, her eyes glossy with enjoyment as Daddy worked fast. He attached more and more clothespins, following her large breast around, encircling the right one before clamping her nipple.

Mommy groaned at that.

“Wow,” I said, my eyes wide. There were twenty clothespins circling her right breast and Daddy added more to her left.

She winced with every one, sometimes groaning. Daddy would pause, flicking one, bringing a squeal of pain from Mommy. It was so obvious they had done this many times before. Daddy’s dick throbbed so hard. He enjoyed the pain he caused Mommy as much as she loved it.

Daddy looked up at me as he finished her left breast, a fatherly smile on his lips. “You want one, don’t you, slut?”

I nodded my head.

Daddy reached over Mommy’s body and pinched a clothespin at the bottom of my right breast, indulging me like any doting father. I gasped. It bit harder than the nipple clamp, pinching my skin. I groaned, fighting the pain, my clit and nipple throbbing again. The had grown numb and I almost forgot about them.

“You may cum, Slut,” Daddy said as he pulled out the last four clothespins from the bag.

“Thank you, sir,” Mommy nodded.

He didn’t attach them to her breast but to her engorged labia. Mommy had thick lips that peeked out of her vulva. Daddy clamped on two per labia, and I winced. Mommy bucked each time. She gasped and moaned and then Daddy slapped her right on the clit.

Mommy came. “Yes, yes, yes, thank you, sir. Oh, yes. Oh, wow, that’s amazing. Oh, my god. Oh, yes.”

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