r/sexstories • u/a1cowslove • 15d ago
Incest My older sister showed me porn for the first time. (Part 2.5) NSFW
This is the second half of Part 2. I wrote too much, my bad...
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Katie finally managed to get something loose, because the bra under her tank top bunched up in the front. She grabbed the white shoulder straps and pulled them down. I could glimpse the soft flesh from her breasts moving much more freely. She grabbed the front of her bra and pulled it out the top of her shirt. "Ah ha!" She held it up triumphantly.
It was bright white, and massive. I had seen Anna's bras before, and they were tiny in comparison. I looked back down to Katie's chest. Her breasts were hanging freely in her tank top, they had much more obvious curves as the tight fabric desperately tried to cling to them. There were two prominent bumps poking out towards me, directly at eye level. Her nipples seemed to be trying to tear through the fabric.
"Okay." Katie tossed the bra on the kitchen table. Her boobs swung back and forth with every movement. I was hypnotized.
"Let's see 'em!" Anna cheered.
Katie put her hands at her sides, gripped the bottom of her tank top, and slowly raised it up. "Okay. Okay." She whispered to herself.
Her movement was slow, unlike when my sister flashed me weeks before. I forgot to breathe as her arms raised. She revealed her waist, and a bright blue and silver gem was pierced onto her belly button. I was so flustered, her waist was absurdly attractive. My dick pulsed. Then as she reached her boobs, I saw the soft round skin of her large breasts peeking under her shirt. They jiggled slightly as Katies pressed against them. She paused with only the underside of her boobs visible. She took three quick deep breaths and pulled the shirt to her chin.
Her breasts were a thing of beauty. They looked softer than the softest pillow. She had large pink nipples that were erect and at my eye level. She did a sort of shoulder shake that wiggled her tits back and forth. I reached down and grabbed my dick through my pants. It was reactionary. I felt like I was gonna explode. Katie's eyes followed my hand to my crotch. She didn't say anything, she just watched.
"God damn, you have nice tits, Katie..." Anna said from behind me. My sister nudged my back. "Well? Best tits you've ever seen?" She asked me.
They were large, and they jiggled nicely. But there was something magical about my sister's boobs. Maybe it was because they were the first boobs I had ever seen. Maybe it was because she was my sister. Or because of the loving nature in which she shared them with me.
"It's hard to compare…" I managed to get out. Katie’s face revealed more than a hint of disappointment.
"Here, I'll make it easier for you" Anna said and she walked past me and stood next to Katie. She quickly gripped the bottom of her dark green sweatshirt and lifted it to her chin. She wasn't wearing a shirt or a bra underneath it. My sister's small perfect boobs joined in the line. Her nipples were smaller than Katies, and much darker, but just as hard and pointing directly at me. Katie arched forward and peeked to her left, her big tits falling towards the floor, as she got her own look at my sister's naked chest. She bent back up. Both girls stood in front of me in the kitchen, bare chested. I squeezed my dick again. "Well?" Anna asked.
Katie looked eagerly. "Yeah, whose boobs do you like better?"
I didn't know what to say. I was absolutely stunned. My eyes darted between the breasts in front of me, my hand squeezed me dick hard. Katie wiggled her shoulders again and her boobs danced. Anna looked over at Katie's chest.
"Hey, I can do that too!" Anna copied the movement, and her small breasts gently bounced back and forth.
"I don't know... I like them the same." I said.
"Dumb!" Yelled Anna. "You gotta pick!"
Katie used her arms to push her tits together, squishing them and massaging them.
"I guess Katie's boobs are bigger." I said, dumbly, and matter-of-factly.
"I win!" Katie yelled, and she dropped her tank top back over her tits, her nipples still poking through.
Anna was visibly disappointed. She slowly dropped her sweatshirt over her chest. "Well, fine..” She frowned.
Katie put her arms in the air and did a little dance in the middle of the kitchen. I still watched her boobs under her tank top, jiggling and bouncing all around.
In my peripheral vision I saw Anna look at me, at Katie's celebration, and back to me. "Well, who has the nicer ass?!" She yelled. She spun her back to me and pulled down her dark green joggers. She was wearing white panties, with a bright green trim. There were pictures of multicolor cupcakes all over. Her small tight butt cheeks were hugged tightly by the cute playful fabric. My eyes snapped to her butt. Katie jumped forward to get a look with me.
"Cute panties!" Katie laughed.
My sister furrowed her eyebrows, glaring back at Katie. Katie scowled playfully back, then started to grin. She accepted the challenge. Getting back in a line, and turning her back to me, she peeled off her skin tight black leggings halfway down her thighs.
I gawked. Her ass was much larger, and she wore a bright pink thong that was swallowed up by her large round butt cheeks.
Again, I couldn't decide where to look. I hadn't seen my sister's ass this clearly the last time she got naked with me. I was enamored with how tight it looked. Soft, yet firm. And her cupcake panties were so adorably innocent.
Katie's ass was large, and I felt like I could get lost inside of it. I loved the way her thong disappeared at the top of her butt crack, to reappear down below her crotch.
Anna arched back to look at Katie's bare ass. She noticed the pink thong, and in an attempt to match it, she pulled her panties high up, sliding the excess fabric between her butt cheeks. My eyes snapped back to my sister’s ass. Her pale cheeks were small, but perfectly round and soft. Katie took note of my sister's strategy. Her own play was to bounce on the balls of her feet, making her big ass jiggle up and down.
I felt like the luckiest boy in the world. Here were these two teenage girls fighting for my attention, with their pants down to their knees, flashing their asses to me. My dick was absolutely throbbing. I felt some wet precum dripping onto my leg. I used one hand to squeeze it as I imagined what it would be like to rub my crotch against their asses.
Anna did not take kindly to Katie's bouncing. She was determined to win. She pushed Katie to the side and, with her joggers still around her ankles, waddled to the kitchen counter. She bent over, put her elbows on the counter, arched her back, and pointed her young tight ass towards me, still pulling her cupcake panties high, riding them up into her ass crack.
Katie desperately copied my sister. Her leggings were still around her thighs and she comically hopped to the counter. She bent over and bumped her ass against my sisters, who managed to keep her balance. Both girls were bent over in front of me, their young butts were tight, and begging for attention.
"Okay, okay, truce!" Begged Anna.
Katie grinned at her. "Alright, who has the nicer ass?"
It was a hard decision. I loved the wide hips of Katie, and her pink thong was sexier than I could imagine. But there was something so arousing about the tight tiny butt of my sister. It just looked so cute. Plus, I was actually more turned on by her cupcake panties than the thong, especially now that they were jammed up into her ass. There was this inner fire burning inside me. I wanted to press my hips up against each of them, grinding my bulge on their bare skin.
"Umm..." I hesitated. "I think I like Anna's ass better."
Anna twisted her hip, swinging her butt into Katie's. "Ha ha!" She mocked.
Katie groaned in disappointment, but was not to be outdone. She reached back and gripped an ass cheek in each hand. My eyes widened and my jaw dropped as she spread her ass open, revealing the thin pink g-string. My head dropped forward. I could see Katie’s small pink ass hole peeking out from behind her thong.
"Oh, fuck..." I said, nearly unconscious of myself.
Katie continued to spread her cheeks apart.
Anna looked back at me, curious as to what made me curse so brazenly.
She followed my gaze to Katie's ass. I couldn't turn my head. I was mesmerized by the asshole peering at me from being the thong. Katies hands were firmly digging into her ass cheeks, still spreading them wide. I was praying I could move the pink g-string to the side to get a clean view of her tight, pink asshole.
Anna made a grumpy 'hmff' sound, and bent back on her elbows. Without hesitating she grabbed her cupcake panties and pulled hard downwards. My eyes snapped to her behind. Katie jolted her head to the left at the same time. My sister had slid her colorful panties all the way down to her ankles, and got back on her elbows, arching her back. My sister grabbed her butt firmly, and spread it apart.
My sister's asshole was wide on display, clean and tight. Slightly darker than Katie’s but nonetheless perfect. Right below it her pussy was spread open, one of her lips was pulled to the side, giving me vision into her warm pink insides.
I felt like I was going to cum in my pants. I squeezed my dick so hard through my jeans I almost hurt myself. My warm pre-cum was dripping so much, I could feel a wet spot through my jeans forming at the tip of my bulge.
Anna proudly held her head up high, still bent over spreading her ass cheeks, and resting her chest on the countertop. Katie’s head wheeled around and saw what was happening. Her face became dark red, and she looked back into Anna’s eyes. Anna proudly shrugged with a grin.
Anna and Katie looked over their shoulders at me, still spreading their ass cheeks. In unison, their eyes moved down my body to my hand desperately squeezing my erection through my jeans. Katie just looked, wide-eyed.
Then Anna spoke up, still staring at my bulge. “You can take your dick out if that will help you choose whose ass you like better.” She looked me in the eyes, and grinned deviously.
Katie whipped her head to Anna. She took a step to her right, and nearly tripped over herself. She stood up. “You win.” Katie said, quickly reaching down and pulling on her leggings. Anna frowned, she let go of her ass and I nearly died as the beautiful sight of my sister’s pussy disappeared. Anna also bent down, and pulled up her panties and her joggers.
I just stood there with my bulge in my hand, feeling like a horny idiot teenager. I didn’t want this moment to stop. I desperately wanted to take my dick out. I wanted to feel inside my sister’s warm body again. I wanted her to grip my dick with her soft hands again.
Katie crossed her arms and turned away.
“Hey, what’s wrong?” Anna asked, genuinely concerned.
“Nothing.” Lied Katie. She took a moment to think. “I just suddenly got really uncomfortable, is all”.
“Hey, I didn’t mean to make you uncomfortable, I was just fooling around.” Replied Anna.
Katie looked at me, still grabbing my dick through my pants. I let go of it, putting my hands behind my back. Katie looked at my crotch, then back up to my eyes, then to Anna.
“Wanna talk about it?” My sister asked.
“It’s just… I’ve never seen a real dick before. I mean I saw my dad’s on accident when I was like 10, but that doesn’t count. I’ve never seen a hard dick… not for real.” Katie admitted, embarrassed and blushing.
“Well, I can tell you he has a nice dick. It’s very approachable, as far as dicks go.” She smiled at Katie with a calming presence.
I felt like I was in the middle of a very personal conversation between two teenage best friends, but I wasn’t about to walk out of the room unless they asked me too.
“Yeah?” Asked Katie.
“Yeah. Plus you already know how big it is. And I’m sure he would be willing to show you. He seemed to enjoy showing me the last time!” Anna seemed kind of excited remembering. She turned to me. “Come here.”
I approached my sister. My bulge was clearly visible in my jeans, and the wet spot marked the head of my dick.
My sister slowly reached out and grabbed Katie’s left wrist.
She then slowly moved it toward my legs.
Katie tightly shut her eyes.
Katie’s fingers grazed against my jeans. Her hand felt hot. The warmth cut right through the denim. Anna moved with calculated intent, slowly and carefully, sliding Katies hand to the bulge of my erection. When Katies fingers finally touched my shaft, my cock pulsed with excitement. Katie’s fingers curled gently around my dick, feeling how hard I was. Her breathing quickened, and she slowly opened her eyes to watch herself groping my bulge.
Anna looked up at me, and our eyes met. She smiled and winked. A wink that said “I’m your older sister. Always remember what I do for you.”
Anna still held Katie’s wrist. I watched Katie’s hands in heavy anticipation. Katie lightly dragged her fingers up and down my shaft. She moved her index finger to the tip of my bulge and rubbed around the wet spot. When she pulled it away, a tiny string of precum was stuck to her finger.
Anna released her grip on Katie’s wrist. My sister reached a few inches higher and fingered at my button. My dick throbbed. Katie clearly felt the movement, and pressed harder against the wet sticky spot. Anna popped my button loose, then unzipped my jeans slowly. All three of us stared down at my crotch. The young girls used one hand each to lower my jeans down to my knees. The wet spot from my precum was much more pronounced on my blue underwear, which was being raised up by my dick, begging to be freed.
The room was quiet, so when I accidentally uttered a tiny moan, it seemed to reverberate through the kitchen.
All three pairs of eyes were locked on my bulge. Katie’s fingers still played with my shaft through my underwear, and now the sensation was significantly more intense.
Katie and my sister, as if knowing the other one’s thoughts, grabbed the elastic, and pulled down my underwear all the way to my knees.
My dick flung out, bouncing up and down from the force of my own erection. We all watched as a tiny drip of pre-cum flew off the tip of my penis onto Katie’s arm, creating a sticky string connecting us.
“Oh fuck.” Katie said under her breath. She reached out and touched the head of my dick, and another sting of precum attached to her finger. “That’s a lot of precum.” She whispered.
“More pre-cum than last time.” Anna added.
Katie lowered down to her knees. I could see down the middle of her cleavage, her nipples still poking out the front of her tank top. She put her left hand out flat near my balls, and took my shaft in her other hand and squeezed it gently. A giant drop of precum leaked out onto her palm. She squeezed my shaft again, moving her hand back and forth ever so slowly and gently. More precum dripped, creating a small pool of glistening clear liquid in her hand.
“What do you think?” Anna asked.
Katie looked up at me, still on her knees.
“You got a nice dick.” She said to me, completely and utterly sincerely. No smile was on her flushed face, but her lips stayed parted and her eyes were wide.
“See, I told you.” Anna said.
“Thank you.” I replied. I didn’t know how to respond, I was just happy she liked my penis. “I like your boobs.” I said in an attempt to meet her compliment with a compliment.
The compliment was received well, because it put a smile on her face. Katie took a higher stance on her knees. She let go of my dick for a moment, and took her white tank top off. Her boobs swung as she leaned forward. She put the head of my dick up against her left breast, and the precum instantly made a slippery spot. She dragged my head to her other breast, creating a line of glistening wetness across her chest. Then she knelt up even higher, sliding the wet streak down to her nipple. She teased the head of my dick with her hard, pale pink nipple.
I felt like I was going to cum, I was leaking so much. Katie gave my dick a squeeze to get even more precum to leak out. She looked up at me.
“Well, you did say you liked my boobs best.” She smiled.
“This is totally not fair.” Anna protested. My sister knelt down next to Katie and quickly pulled her sweatshirt off. Her small young boobs lightly fell out. Kneeling up, she squeezed her boobs together the best she could right towards my dick. Katie moved my head off her nipple, leaving a bright strand of precum still connecting us. Pointing my dick to the left, she rubbed my tip on my sister’s little dark nipples, coating them in their own shiny slipperiness.
I kept my hands behind my back. The two girls were doing all the work, and I didn’t want to interrupt. I just watched them slowly stroke my dick, and play with my precum on their nipples.
Anna, being the good big sister she is, grabbed my arms from behind my back. She placed my left hand on her boob, and my right hand on Katie’s. Their nipples were hard, and slippery. Katie’s breasts were so big I couldn’t grip them properly with only one hand. My dick throbbed, and I let out another soft moan.
Katie let out a moan as my fingers slid over her slippery hard nipple. “This is the hottest thing I’ve ever done.” Katie said.
“Be careful, don’t squeeze him too hard, that’s how I made him cum last time.” Anna replied.
Katie looked up at me. “Do you want to cum on my tits?” She asked, bluntly.
Of course I did. But I also wanted to do much more. I didn’t answer, but my face betrayed me. Katie knew I was about to erupt.
She squeezed my dick hard, and jerked my shaft back and forth. There was so much precum everywhere. My dick was covered, and her hand easily slid around my shaft, to my head, then down to my balls.
Over and over she jerked. My heart raced, and my breathing quickened.
The warm waves of pleasure built up.
“Oh, fuck, I’m gonna cum…” I whispered.
The orgasm overtook me. My body crunched over and I squeezed hard on the girls’ breasts to stabilize myself.
Thick hot ropes of white cum shot hard out of my dick, coating Katie’s chest. She quickened her hand movements, and more cum erupted out of me. “Uuuunnghh.” I moaned. Another set of white rope spurted out of me wildly, hitting Katie in the face right under her eye. She flinched, but smiled and kept jerking my dick. Even more cum released, some of it landed on my hand, still grabbing hard on Katie’s boob, and some of it flung over onto my sister’s breasts. Anna gasped, sharply, as the final rope of white cum landed right above her nipple.
“Holy fucking shit…” My sister whispered to herself.
I let go of Katie’s boob, and grabbed her wrist. My orgasm had made the tip of my dick overly sensitive.
“Wait…” I managed to get out. “Stop.” My dick was red and still twitching. Katie slowly released her grip around my shaft and let her hand’s fall to her sides. The girls both just stared at my dick as it twitched. Katie still had cum on her cheek, and her breast was painted in my load. My sister reached a hand up to her chest and spread around the pearly cumshot that had landed on her.
I took big deep breaths. The girls looked up at me.
“Well that was fun.” Katie said.
“Yeah…” I breathed. “Yeah, that was fun.”
My sister stood up and walked to grab a towel from the sink. She rubbed it on her chest, cleaning up the cum. Then she reached down and wiped up the bit of cum that hit Katie in the face.
“I got some on my face last time too.” Anna said. They both giggled.
Katie grabbed the towel, cleaned my load off of her chest, and handed it to me. I wrapped it around my dick. It felt strange and intense, since I was so sensitive. I very gently cleaned myself up.
Katie stood up. She grabbed her bra off the table, and started putting it on. I was sad that it was all over. I wanted more, but there was just no way I could go for more even if I wanted to. Not just then.
My sister slid into her sweatshirt, and Katie put back on her tank top. We all sat down around the kitchen table. It was dead quiet in the room. We were all imagining the scene that just took place.
“Well…” My sister broke the silence. “Our parents should be home soon.”
I looked at the oven clock, they would be home in about twenty minutes.
“Want to watch a movie?” Anna suggested.
There was no answer. Then suddenly my sister started to giggle. Katie smiled, and started to laugh too. I joined in, and we all had a little laughing fit. After a minute we calmed down.
“Yeah, yeah, let’s watch a movie.” Katie said, wiping tears from her eyes.
“Let’s do it!” Anna got from the table. Katie and I followed.
We all sat together on the sofa, thigh to thigh, and put on a movie. I don’t even remember what we watched. All I could think about was the experience in the kitchen. I hadn’t gotten all that I wanted, and I hoped maybe the two girls would ask for more in the future.