I watched porn with my sister ... and accidentally came on her tits (part 1)

It was summer break, and yesterday I’d gotten home from college. My eighteen year old little sister, Luna, was also home, but our mother was at work.

I was barely conscious when my bedroom door banged open and Luna threw herself onto my mattress, shrieking, “Surprise hug!”

“Jesus, Lu—” She landed right on top of me, her arms wrapping around my neck in a stranglehold.

“It’s so nice to have you here again!” She mashed her face into my shoulder, which would have been cute if not for the fact that she had me in a sleeper grip and I was currently pitching a world-class morning wood beneath the sheets. This became a very pressing issue when I realized two things at once: (a) Luna was wearing a flimsy purple nightgown, and (b) said nightgown was currently doing an Olympic-caliber press against my hardon.

“Air … need air,” I said, which only encouraged her to hug tighter. Her tits, which had recently advanced to natural Ds squished right against my chest.

“Oh my god, you’re such a baby,” she giggled, releasing just enough for me to take a breath.

She pecked me on the cheek, then leaned back on her haunches. Her nightgown bunched up at her thighs, showing more of her smooth, pale legs than I’d seen since she was like twelve and doing trampoline Olympics in the backyard.

She caught me staring and grinned, then jabbed a finger in my ribs. “You’re up, mission accomplished. Did you want to play Smash before breakfast or after?”

I forced my eyes to her face, oversized blue anime eyes behind round glasses, same as always, but the rest of her had matured at double speed. She’d changed in the two years I’d been away at college. Luna had gone from an awkward teenager to... well, a young woman. The purple nightgown clung to curves that definitely hadn’t been there before. Her waist dipped in dramatically before flaring out to hips that shifted beneath the thin fabric as she bounced excitedly on my bed. And then it was her tits. She’d always been cute in a dorky way, but now I found her sexy as well.

“How about after I put on some pants?”

She pretended to think this over then shrugged. “You do you, Chase. If you want to go commando for old time’s sake, it’s your house too.”

“*Sis*.” I shot her a warning look.

She giggled again, rolling off the bed. “No judgment. I watched this TED talk on nudist colonies last week and honestly, I think it’s healthier than people think. Less laundry, less shame.”

I grabbed the nearest pillow to cover myself. “And more police involvement when the neighbors call it in.”

Luna headed for my closet, not even pretending to knock her knobby knees together for modesty. Her nightgown hugged her ass tightly. She bent down, fishing through my old college t-shirts, and the hem shot halfway up her cheeks. Was she going commando? I wasn’t sure if I wanted to find out, but I couldn’t see any panties, just a nice, firm ass beneath the nightgown.

“Luna,” I said. “Not cool.”

“Chill. You’ve seen my butt a million times. Statistically, you’re numb to it.”

“I hope you’re at least wearing panties.”

“Hmm, let me see.” She slowly and teasingly lifted the hem of her nightgown, revealing a pair of cute, hello kitty panties. “Yup, this time I remembered.”

I rolled my eyes.

Grabbing a bundle of clothes, she turned and threw them right at me. “Meet me downstairs!”

She winked and was gone, leaving me to untangle myself from sheets, pride and the ongoing crisis in my boxers.

I quickly got dressed and tucked the erection into the waistband. I found my little sister downstairs, making pancakes by the stove. She also had spilled batter on her upper breasts, gently cleaning it with a napkin so her entire tit jiggled.

After we’d eaten, we headed for the couch. It was our sibling tradition. We always played Nintendo together. The Switch dock was right where I left it.

We played Smash, and she proceeded to annihilate me in the first three rounds. Halfway through the fourth, she hit pause and turned to me, smirking like she’d unlocked a cheat code.

“Can I ask you something kinda personal?”

I braced myself. “Define personal.”

She ignored me. “Did you, like, jerk off a lot at college?”

I almost dropped my controller. “Are you serious?”

She nodded, adjusting her glasses with both hands. “Yeah. It’s normal, right? I read this thing that college guys average four times a week.”

“Why are you reading about that?”

She shrugged. “Curiosity. Also, I have the internet.” She paused. “Do you think I’m weird for wondering?”

“No,” I said. “Just caught me off guard.”

She beamed. “Good. Cause I have a confession.” She leaned in, whispering like it was state secrets. “I found Mom’s porn stash in her bedroom.”

This time, I really did drop the controller. “You’re joking.”

She shook her head. “Nope. There’s, like, a whole box of old DVDs. And magazines. And some, um… equipment.”

I stared at her. “Define equipment.”

She widened her eyes. “Sex toys too. You want to see?”

I coughed. “Luna, that’s … what? No, not really?”

She looked disappointed, then shifted into plotting mode. “I’ll show you anyway.”

I was about to protest when she sprang off the couch, grabbing my wrist and yanking me upstairs like we were late for a flight.

As we climbed the stairs, I couldn't help but notice the sway of her hips and the bounce of her breasts. What was wrong with me? This was my little sister.

We went upstairs and into Mom’s bedroom. The first thing I noticed was the sparkling clean floor that reflected the sunlight. I couldn’t see a dust mote on her shelves, and there wasn’t a wrinkle on her purple coverlets. On the nightstand, she had a photo of Luna and me. On the wall was a photo of a field of flowers extending to the horizon. The honeyed, feminine scent hung in the room, and it was addictive to inhale.

With a grin, Luna slid open the wardrobe. She lowered herself onto her hands and knees, arching her back and allowing me to admire the curves of her toned buttocks that poked under the hem of her nightgown. She pulled out a leather box and placed it right in front of my feet. My eyes widened at what was inside. There weren't a thousand but there sure were many sex toys, glistening from all the nights our mother had used them. I knew my ex kept two vibrators, but I saw at least five vibrators inside the box along with dildos, vibrating panties, clit stimulators and a whole lot of other sexual objects that I wasn’t sure were called.

“Wow,” I said, trying my hardest not to let my jaw drop.

“Told you,” she said and picked a dildo up, touching the tip. “This one’s still sticky. I think she used it last night … Do you want to touch it?”

“I’m fine,” I told her, but deep inside, I wanted to. I started popping the weirdest boner in my life.

“The clit stimulators are nice, but the vibrating panties were the best since they’re discreet,” she said.

“I don’t need your review of them,” I said and then shook my head. “Wait, how many of them have you tried?”

“Not all of them, but certainly many of them,” she said and brought up the vibrating panties, smiling as she looked at them.

“Alright … our mother likes to masturbate. But I don’t feel good about looking at her stuff.”

“You don’t want to see her pornos?”

“Come on, Luna, I believe you. We shouldn’t be snooping around like this.”

“Fine …” she then poked my bulge with a grin. She giggled. “It looks really hard.”

I blushed. “It happens.”

“Do you wanna … masturbate together?” she asked, biting her bottom lip.

I kinda knew it was coming. I was horny, but I also knew we would cross a significant line. “You sure about this?”

“I’m just curious how it looks when a guy masturbates. You’ve probably seen a girl already.”

“Girls have different methods though. It’s pretty straightforward to guys.”

“You don’t want to know how I do it?” she asked.

It sure was tempting. “Fine,” I said. “Where should we go?”

“To my bedroom,” she said. We put mom’s stash back in her wardrobe, and went into my sister’s bedroom. Luna closed the door behind us and turned to face me, her cheeks flushed with excitement. “Do we undress?”

“Unless you masturbate with your clothes on,” I teased her.

I took off my shirt, and her eyes swept over me before she pulled the top over her head. It felt like slow motion when she reached behind her back and unhooked her bra, freeing her boobs in front of my eyes. They bounced and jiggled till they found equilibrium. To me, they looked perfect, and they were definitely Ds. They were two perfect mounds topped with a sweet, pert berry at each peak, and her pink nipples blended well with the creamy white color of her breasts.

“Uhm, do you like them?” she asked while twirling her hair on her finger.

“They are gorgeous,” I said when I realized I’d been staring for longer than necessary. I knew women liked attention but there was a limit before it turned creepy.

She beamed. “I was a bit insecure about them since they were small for so long, but now all of a sudden they started growing.”

“You make it sound as if it were a curse.”

“No … As long as they don’t end up like melons,” she said with a titter.

We peeled off the rest of our clothes. Once she reached her panties, I noticed a little wet patch at the center. I gently lowered my shorts, freeing my cock which bobbed up and down. Her eyes widened, and she froze with her fingers on her panties. She was right about to slide them down but stopped. A part of me felt it hard to believe we were doing this.

“Wow … can that fit in a pussy?”

“As long as you’re aroused,” I said.

“Can I touch it?”

“Sure,” I said.

She reached for it and curled her hand around it, gently stroking me up and down. She burst out giggling. “Did you slip a bone inside?”

“Very funny,” I said. “Are we going to masturbate or tell jokes?”

“I find it funny that you’re now so horny that you can’t suppress it.”

“Yeah, it didn’t feel as odd as I thought it would,” I admitted. I tugged at her panties. “Come on, are you going to keep your little pet caged in for the rest of the day?”

She bent over and slid her panties to her ankles, kicking them aside. I caught a brief glimpse of her pink, wet folds before she jumped onto the bed with her back against the wall. She patted the spot next to her. The last time I sat there was years ago when we’d played DS together.

I joined her, glancing between her legs at her pink womanhood. I couldn’t spot any stubbles on her clean flesh. “Do you always shave?”

“Every other day … But sometimes, I like to grow hairy just to see how it looks.”

“Kind of like me … Now show me how you masturbate,” I said, wondering if she had any specific ways.

“So, first I usually wet my fingers,” she showed me, licking her fingers with her tongue, “and then I draw a circle on top of my pussy like this,” she said and gently massaged the top of her folds with her glistening wet fingers. I couldn't help but feel like I was witnessing a private art exhibit. It was both forbidden and intriguing to see my innocent little sister pleasuring herself in front of me. “I also rub the clit now and then and slide a finger inside me.”

“Why aren’t you getting going?” she asked. “I want to come when you come.”

“Good point,” I said, curling my right hand around my cock and stroking myself. I watched intently as Luna demonstrated her technique, her fingers moving in slow circles over her most sensitive areas. The sight of her pleasuring herself was incredibly arousing.

"That feels good?" I asked, my voice husky.

She nodded, biting her lip. "Mhm. What about you? Show me how you do it."

I gripped my cock more firmly, sliding my hand up and down. "Like this," I said. "Varying the speed and pressure."

“It looks so dry,” she said. “Don’t you ever use lotion?”

“To be honest, I haven’t masturbated in a long time, but when I did, I did use lotion.”

“Can I get some for you?” she asked, stopping with her hand in her honeypot.

“It’s fine sis … this feels quite intense already.”

“I feel it too,” she said. “It just feels so good, so I don’t want to stop.”

“We’re on the same page,” I said.

“Do you want to touch me too?” she suggested. “Maybe not as exciting for you since you already touched a girl.”

“It’s always exciting to touch another girl,” I said and reached into her private area till I made contact with her flesh. She was soaked and her folds were as smooth as velvet. It was quite pleasant to touch her, feeling her wet heat spilling over my fingers. As she spread her legs, her pink, plump folds glistened in the dim light of the bedroom. Her lips were slightly swollen and slick with arousal, a clear sign that she was horny.

I pulled back and stroked myself with the same hand I had touched her with. It was slightly wet but enough lubricants for now. “Do you need some spit?” she offered me.

“Sure,” I said. I didn’t want to take my hand away from my cock. It just felt so good. She held her hair back as she leaned forward and carefully spat in my hand. I wrapped my hand, covered with her juices and spit, around my cock. It felt way better.

We moved our hands in unison, Luna's fingers circling her clit while I stroked my shaft. The room filled with the soft sounds of our breathing and occasional quiet moans. I found it hard to believe we were doing this, but at the same time, it felt too good to abort. Luna's cheeks were flushed pink, her blue eyes half-lidded with pleasure behind her glasses.

"This feels so much better than doing it alone," she whispered.

I nodded in agreement, too caught up in the sensations to speak. My eyes roamed over her body: the gentle curves of her breasts that jiggled and the glistening pink between her thighs. She was beautiful in a way I hadn’t noticed before.

Luna's movements became more frantic, her hips lifting slightly off the bed. "I think I'm getting close," she panted.

Watching her pleasure herself pushed me closer to the edge. My hand moved faster, pre-cum leaking from the tip and easing the glide of my fingers. The familiar tension built in my lower abdomen.

"Me too," I groaned.

Luna's back arched off the bed, her thighs trembling. "Oh," she moaned, her words cut off by a sharp gasp. Her body tensed, then shuddered as waves of pleasure washed over her. Watching my sister come pushed me over the edge.

My balls tightened as the pressure built to an unbearable intensity. Just as I was about to climax, Luna sat up suddenly, leaning towards me. The shift caught me off guard. My hips jerked involuntarily as I started to cum, and before I could stop it, thick ropes of semen spurted onto Luna's chest and breasts.

"Oh!" Luna exclaimed in surprise, looking down at the pearly streaks across her skin.

I aimed my cock back at myself. The third spurt hit my chest and then the rest spilled over my fingers as I slowly resorted to stroking myself. “Gosh,” I mumbled. It must have been the best masturbation in my life.

My little sister caught her breath as she studied my semen. “Is it normal to shoot so much?” she asked me.

“Depends,” I said. “Not abnormal, but this was a bit more than usual[.”](https://juliusincestus.com/category/incest-stories/)

She touched it with her finger and tried tasting it. “It’s very filling.”

“Yeah,” I said. We exchanged glances, and I saw how a light sheen of sweat covered her body along with my semen that dribbled down her curves, leaving a pearly trail behind.

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