Getting turned on by sisters underboob

I was in the living room, lounging on the couch and absentmindedly scrolling through my phone, when my sister, Jenny, walked in. She was carrying a yoga mat and looked toned and athletic. Jenny was wearing a small, tight red crop top and matching yoga pants that left little to the imagination.

My heart skipped a beat as I caught a glimpse of her underboobs – her smooth, tanned skin peeking out just above the waistband of her pants. I tried to act nonchalant, but my eyes couldn’t help but wander down to the front of her pants, where I noticed a thick, prominent cameltoe.

I felt a sudden jolt of excitement run through my body as I took in the sight of my sister’s sexy, toned figure. I couldn’t believe what I was feeling – I had never sexually thought of Jenny before, but now I couldn’t get the image of her underboobs out of my head.

I tried to focus on my phone, but I couldn’t concentrate; my mind was consumed with thoughts of Jenny’s tight, toned body. I could feel my cock starting to stir in my pants, and I shifted uncomfortably on the couch, trying to hide my growing arousal.

“What are you looking at?” Jenny asked, catching me staring at her.

“Uh, nothing,” I stammered, feeling my face flush with embarrassment. “Just scrolling through my phone.”

“Really?” she said, teasingly. “Because it looked like you were checking me out.”

I felt my face grow even hotter, and I stammered a response. “I-I wasn’t, I swear! I was… scrolling through my phone.”

Jenny chuckled and shook her head. “Sure you were. You are an awful liar, Ian.”

“Well, maybe I was checking you out,” I admitted sheepishly, my heart pounding. “I couldn’t help it – you look hot in those yoga pants.”

She looked shocked. “Yuck, I can’t believe you said that!” she screeched, her horrified gaze fixated on me, and a visible shudder swivelled down her spine like an arrow. She was calling her discomfort.

“Jeez, Ian! That’s gross,” Jenny exclaimed, wrinkling her nose in disgust. “I’m your sister, not some random girl you can ogle at!”

Her reaction only made my arousal intensify, and I felt a bead of sweat trickle down my forehead. My cock was now fully erect, straining against the fabric of my pants. I couldn’t believe what I was feeling – I had never been attracted to Jenny before, but now I couldn’t stop thinking about her tight, toned body.

“I know, I’m sorry,” I said, trying to backtrack. “It’s just… you look really hot, that’s all.”

Jenny rolled her eyes. “Well, thanks, I guess. But seriously, Ian, you can’t look at me like that. It’s weird and uncomfortable.”

I nodded, feeling a pang of guilt. “You’re right, I’m sorry. I’ll try to control myself.”

Jenny shook her head and sighed. “Whatever. I’m going to do my yoga now. Try not to stare at my ass the whole time.”

“Or your cameltoe… Sorry, Sis,” I said as I finished lamely, cringing at my words. I couldn’t believe I had just said that to my sister. I felt like such a pervert.

Jenny rolled her eyes again and shook her head. “You’re hopeless, Ian. Just try to keep your thoughts to yourself, okay?”

I could see her smile as she walked off, and I couldn’t help but feel a mix of emotions – guilt, excitement, and arousal. I knew I shouldn’t think about my sister that way, but I couldn’t help it.

She got to the living room doorway, “You coming or what? It’s obvious you want to watch me do yoga.”

“Uh, yeah, sure,” I stammered, trying to play it cool. I put down my phone and followed Jenny out of the room and upstairs to her room.

As we walked upstairs to Jenny’s room, I couldn’t help but feel a surge of excitement run through my body. I knew I shouldn’t feel this way about my sister, but I couldn’t help it.

Jenny’s tight, toned body was like a magnet, drawing me in and making me feel things I had never felt before. I couldn’t believe I was getting turned on by my own sister, but there was no denying it.

As we entered Jenny’s room, she spread out her yoga mat on the floor and began to warm up. I sat on the bed, trying to act casual, but my eyes were glued to Jenny’s body.

I watched as she stretched and contorted her body, her muscles rippling and flexing beneath her skin. I could see the outline of her firm, round breasts and the curve of her toned abs.

I felt a throbbing in my pants as I watched Jenny’s body move. I couldn’t believe how turned on I was. I had never felt this way about anyone before, let alone my own sister.

“Hey, Ian, you wanna join me? Or are you having fun just watching me, you little perv,” Jenny asked, breaking me out of my trance and biting her lip.

“I-I will watch if it’s ok; I don’t want to disturb your yoga session,” I said, trying to sound nonchalant. But the truth was, I couldn’t take my eyes off her.

She did sexy grab pose omg, her cameltoe strained against her yoga pants, I started rubbing my crotch.


As Jenny moved through her poses, I felt my arousal growing. I couldn’t believe I was getting turned on by my own sister, but there was no denying it. I shifted on the bed, trying to adjust my growing erection without being too obvious.

Jenny noticed, of course, and raised an eyebrow at me. “Seriously, Ian? You’re getting turned on by watching me do yoga?” she asked, incredulous.

I felt my face grow hot with embarrassment. “I-I can’t help it,” I stammered. “You just look so… hot.”

Jenny shook her head and laughed. “You’re unbelievable,” she said, but her voice had a hint of amusement. She continued with her yoga routine, and I watched, my eyes glued to her body.

“You’re such a tease, Jenny if you wanted me to come and watch. Can’t blame me for getting hard,” I said as I tried to hide it.

She smirked as she stood up, “Well, if you’re that turned on, maybe we should take this to the next level,” Jenny suggested, her voice low and seductive. My heart skipped a beat as I realized what she was implying.

“Are you serious, Jenny?” I asked, my voice trembling. I couldn’t believe what I was hearing.

“Yes, I’m serious,” Jenny said, nodding. “I want to see if you’re really as turned on as you say you are.”

My cock throbbed at the thought of what she was suggesting. I couldn’t believe this was actually happening.

Without another word, Jenny began to undress. She slowly peeled off her yoga pants, revealing her smooth, toned legs. She then slipped off her crop top, exposing her firm, round breasts.

I couldn’t believe what I was seeing. My sister was standing in front of me, completely naked. My cock was rock hard, straining against my pants.

Jenny walked over to me, her hips swaying seductively. She climbed onto the bed and straddled me, grinding her hips against my crotch.

“Do you like what you see, Ian?” Jenny asked her voice husky with desire.

“Yes, I do,” I moaned, my hands reaching up to cup her breasts. “You’re so beautiful, Jenny.”

I took out my cock; Jenny’s eyes widened as she saw my rock-hard cock spring free from my pants. She bit her lip, a look of excitement and curiosity in her eyes.

“Wow, Ian, you’re huge,” she said, her voice barely above a whisper. She wrapped her hand around my shaft, slowly stroking it up and down.

I moaned with pleasure as Jenny touched me. I had never felt anything like this before – the sensation of my sister’s hand on my cock was almost too much to handle.

Jenny leaned down, her lips inches from my ear. “Do you want to fuck me, Ian?” she whispered, her breath hot against my skin.

I could barely speak. “Yes, I do,” I moaned, my voice strained with desire.

“You better not tell anyone if we do this,” she said as she got on her knees in between my legs.

Jenny reached down and grabbed my cock, stroking it slowly up and down. I moaned with pleasure as she touched me, my hands reaching up to cup her breasts.

“Oh god, Jenny,” I groaned as she began to stroke me faster. “You feel so good.”

Jenny grinned, her eyes twinkling with mischief. “I’m glad you think so,” she said, continuing to stroke my cock slowly and deliberately.

She got up and straddled me as she guided my cock to her sweet spot, her pussy.

I watched in awe as she slowly lowered herself onto me, her tight, wet pussy enveloping my cock. I felt a sudden jolt of pleasure as she began to move up and down, sliding me in and out of her.

“Oh god, Ian,” Jenny moaned, her eyes closed as she savoured the sensation of my cock inside her. “This feels so good.”

I could barely think straight as I felt my sister’s pussy gripping tightly around my shaft. It was like nothing I had ever experienced before – the feeling of being deep inside her was overwhelming.

I held her hips, guiding her up and down as her ass cheeks kept slapping onto my legs when I pulled her down on my dick.

I could feel my orgasm building deep within me, and I knew it was only a matter of time before I exploded. But I didn’t want this to end – not yet.

“Oh god, Ian,” Jenny moaned, her voice thick with lust as she continued to ride me. “I can feel you getting closer – don’t hold back on me.”

“I won’t,” I promised her, my hands gripping her hips tightly as she continued to move up and down on top of me. “I want you so badly.”

As I uttered those words, a feeling of intense pleasure overtook me. It started in my cock as a sudden jolt and spread throughout my entire body. My muscles tensed up, and I arched my back as a torrent of hot semen shot out from my cock and deep inside her.

“Ahhh… Yes, oh yes,” she moaned as I pumped her hard up and down my throbbing cock.

I couldn’t believe my sis was riding my dick; she was a boyfriend, too, and this was so fucking hot.

“Oh fuck, you like it, Jenny; want me to pump you harder,” I said as sweat poured down me and watched her tits bounce.

Jenny’s moans grew louder as I plunged my cock into her again and again. I could feel her walls tightening around me as she approached her own orgasm. Her breathing quickened, and her grip on my shoulders grew stronger.

“Don’t stop, Ian! I’m so close!” she cried, her voice trembling with pleasure.

Her pussy was soaked, and my cock glided in and out with ease. I could feel her labia stretching around me, and I could see the outline of my cock through her transparent opening. It was the hottest thing I had ever seen.

I pulled out and pushed her to the side of the bed, spreading her legs and diving in for some oral action. I sucked and licked her swollen clit, exploring every inch of her juicy pussy. I could taste her sweet tanginess, and I moaned with pleasure as she writhed beneath me.

“Yes, right there! Oh god, Ian, you’re going to make me cum!” Jenny screamed, her hands gripping the sheets as her orgasm approached.

I kept licking and sucking, exploring every inch of her dripping wet pussy. My tongue darted inside her, tasting every drop of her sweet juices. She tasted so fucking good, I couldn’t get enough.

I turned around in a doggy position, slid my dick up and down her wet, soaking coochie and stuck it back in.

Jenny’s moans filled the room as I slammed my cock into her wet, eager pussy. I could feel her walls gripping me tightly as I thrust in and out, each stroke bringing us closer to the edge. Her breasts bounced with each movement, and her ass cheeks slapped against my legs as I drove into her again and again.

“Fuck, Ian, you’re so deep inside me,” Jenny moaned, her voice strained with pleasure. “I can feel every inch of you.”

I wrapped my arms around her, pulling her close as I continued to thrust in and out of her. Our bodies moved in perfect harmony, each stroke pushing us closer to the edge of ecstasy.

“I’m close, Ian. Don’t stop!” Jenny cried, her voice barely above a whisper.

I could feel her pussy clenching around me as she approached her climax. Her breathing grew ragged, and her muscles tensed up as she prepared to come.

“Yes, Jenny, take my dick, take it hard, you dirty girl,” I growled, my voice low and guttural.

I couldn’t hold back any longer – I felt my balls tighten as my orgasm built, and with one last, powerful thrust, I exploded inside Jenny, filling her up with cum.

“Ian!” Jenny cried, her voice barely above a whisper as she felt my hot semen fill her up. Her pussy clenched around my cock, milking it for every last drop, and I moaned in pure ecstasy, completely spent.

Jenny collapsed forward onto the bed, still gasping for breath and shaking with the aftershocks of her own explosive orgasm. Our bodies were slicked with sweat and covered in the evidence of our messy lovemaking. But I didn’t care – I felt closer to Jenny than ever.

As we were recovering, Jenny turned her head towards me and whispered, “Wow, that was intense. You’ve got some skills, Brother.”

I blushed at the compliment and chuckled nervously. “Well, you’re not so bad yourself, Sis. Maybe we can do it again sometime when mom’s not home…”

Jenny smirked and shrugged, “I guess if you play your cards right, we might just do it again.”

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