“You’ll have to make a decision now, my little princess.” I continued, starting to pant myself, as I fucked her roughly now. Reaching over to my nightstand, I opened the drawer and pulled out the ZipLock bag with the fake birth control pills, and dropped them next to her face. “Because I’m about to come very soon. Are you sure you’d do anything for me?”
The whole situation didn’t seem to fully register with her, as she reached for the bag with one hand and held it closer to her still cum-covered face. She was caught in her pleasure, determined to make me happy, and loved to be dominated and used. But pregnancy? She just stared at the bag while her moans grew in intensity.
“That ... are ... my pills!?” she stammered, each pause caused by our bodies colliding, and accentuated by a grunt escaping her lungs. She didn’t say it like she was shocked or afraid. It was a clear remark of skepticism. Did I grossly underestimate how familiar she must be with her pills, after taking them every day for years? At least she didn’t seem to have noticed the differences immediately, just like I had hoped. “But ... then ... unpro ... tected!”
“Yes, my little Princess. You’ve been off the pill for two days now. I switched them the first morning.” I immediately saw it. The memory of finding her purse on her bed, with her pills in the wrong compartment flashed into her mind. “Do you want to be my good girl and help me get back at your Daddy? Just imagine being knocked up by me. He could never do that to you. Could never reclaim you. If you carried your little brother’s baby, you’d be forever mine!”
“Yours!” she panted. “Forever yours! All of me, yours! No pills. Unprotected! Pregnant with yoUR BAAABYYYYYY!!” she wailed, unceremoniously dropped the bag with the pills like they no longer mattered to her in the slightest, and her whole body started violently shaking as her eyes, once again, rolled into the back of her head.
“I’m coming, Princess. Your little brother is coming into your unprotected fertile womb! I’m fucking a little baby into you!” I grunted, as I exploded inside her.
Hearing my words, and feeling me erupt into her canal, she screamed like a banshee that hit her toe against the kitchen table, and her fingernails were painfully digging into my back as her hips lifted off the mattress and quaked around my twitching cock. Then her scream ebbed away until she was absolutely quiet. It seemed like she had an earth shattering orgasm. Her hips dropped back to the mattress and her back arched off it, as she started thrashing around. Her mouth was still wide open with suspended breath. She went off like that for half a minute before she finally collapsed a second time as a babbling and sobbing mess.
I held her hips tightly pressed into my groin, as I squirted spurt after spurt of my hot cum into her depth, all the while feeling her folds ripple around me, intensified by the vibrations of the plug. I relished in my triumph, and that only heightened when I realized that, even after unloading into my sister for the second time, there was still no sign of my dick going back to sleep. So, I simply kept going!
I kept plunging into her while she remained powerless underneath me, continuously blubbering unintelligible sounds. Though they did sound like she was enjoying herself, even encouraging me to keep going, I mostly enjoyed the notion of leaving my big bitchy sister as a basically braindead fucktoy. With every collision of our groins, I could see the impact travel up her body and cause her breasts to jump. It was heaven.
When I felt my balls stir again, and informed her of my seed’s impending arrival, she simply nodded with a big silly smile on her face that prevailed even after I had stopped jerking on top of her.
Without even bothering to pull out of her, I dropped my weight onto her body, wrapped my arms around her, and turned us both around so she would lie on top of me. Then I started fucking upwards into her as best as I could with her lifeless body restricting me. It took her merely a moment before she started squirming back into consciousness and I heard her tired voice.
“Still hard! Not stopping! How!?” she panted, confusion evident in her voice and expression.
“Oh, Princess. I intent to fuck you senseless tonight! I need to deposit a few extra loads inside your pussy, just to make sure this works! And when that’s done, I’ll still have to fuck your tight little ass!” I grunted, and she immediately started moaning again.
When it looked like she had fully regained her senses and surrendered to her fate, she planted both of her hands to either side of my head and pushed her torso up, before she started to ride me like a cowgirl.
“Do it! Fill your big sister up! I’ll do anything for you, little brother! Anything to make you happy again! I’ll be your good girl to breed! Paint my insides with your seed and make my belly swell up!”
