Skip to content You’d think after three years of college and every possible flavor of porn the internet had to offer, nothing could shock me. Turns out I was wrong. Last night, I sat up in my room for two straight hours watching my little sister get her pussy eaten by her girlfriend, and I still spent the whole time half convinced I’d hallucinated it all.
It’s not that I hadn’t suspected Maya was into girls. The signs were there. First it was those sleepovers that started in high school, all giggles and TikToks and loud whispers after midnight. Then the time I saw her in the pool with Ashley, the neighbor girl, and they were “play-wrestling” on inflatable unicorns. I was supposed to be mowing the lawn, but I watched through the sliding glass, pretending I couldn’t hear Maya’s shrieks of laughter or see the way Ashley grabbed her tits under the water. I didn’t know if Maya even knew I was watching her back then.
Ashley moved in next door during my sophomore year, but she was a couple grades ahead of Maya. At first I thought Ashley was the alpha. She had smooth skin and always wore heavy eyeliner, built like she could pose for the cover of a gym magazine or just as easily grind on a pole for tips. I could see it right away: her brown hair cropped sharp and shiny, her thick thighs in spandex every day of the week, her stare that made you want to drop your phone and rub one off.
My sister was the hotter one, though. That’s what really sucked. She looked like the kind of girl you’d see in one of those step-sister videos, too perfect for reality and all the more dangerous for it. She’d turned nineteen last month, but she still had the cute, devilish face. Long blonde hair, blue eyes, body built for social media thirst traps. The type of natural rack that made you question genetics: her tits were D-cups if they were an ounce, but she never even wore a bra around the house unless our mom was home. Maybe it was subconscious. Or maybe she just liked the attention. I mean, who wouldn’t?
The walls in our split-level were a joke, and our bedrooms were on the same side of the house, so I couldn’t help overhearing. Some nights I’d hear giggles, the shhh-shhh-shhhh of Maya’s sheets, then wet, slurping sounds that left no room for interpretation. I jerked off to the noise a couple times, not even pretending it was anyone but them on the other side. I’d always stop short, the guilt spiking like a splinter in my brain. I told myself it was just Ashley I was thinking of. That I was a normal pervert, not the other kind.
Last night, though, my sister slept over at Ashley’s place, right next door. They didn’t bother to shut the curtains. Or maybe Maya wanted me to see. She was on her back, arms up and fingers twisted into Ashley’s hair, those famous tits mashed together and shining in the glow from her phone’s ring light. With a perfect view to Maya’s bedroom, I stood at my own window in the dark, half hard, praying my mom wouldn’t decide to come home early from her date. Ashley was between Maya’s legs, licking my sister like lesbian porn. Maya’s face was red, her mouth open in this soft O that made her look way younger than she was, but the rest of her said grown-ass woman: hips rolling, thighs clenched and pelvis arched up for more.
I palmed myself through my shorts, just a little, just enough to ease the pressure. I told myself I was watching for Ashley’s sake, not Maya’s, but then Maya came, squeezing her own nipples until her hands shook. That’s when Ashley looked up and locked eyes with me across the twenty feet between windows. She didn’t say anything, didn’t wave. She just licked her lips, pressed a kiss to Maya’s belly, and winked. It was over in a second, but it ruined the whole jerk-off for me. I lost the vibe, slammed my blinds shut, and spent an hour staring at my ceiling trying not to think about it. Or about how much I wanted to watch again.
*****
I woke up early the next morning with a hard-on that could’ve broken a cinder block. I pissed, showered, and went downstairs, half expecting to see Maya and Ashley still tangled up in last night’s sex hair. The kitchen was empty, just the soft tick of the wall clock and the smell of burnt toast from our mom’s attempt at breakfast before work. I poured cereal and ate standing up, scrolling my phone and ignoring the way my dick throbbed every time I remembered that wink and my sister climaxing.
Someone knocked at the door. I checked the peephole, mostly out of habit, and saw Ashley’s face filling the fisheye. She looked a hundred percent awake, makeup perfect, hair smoothed and shining like she’d just stepped off a magazine set. Her tank top was a size too small and low enough to show the dark line of her sports bra between her tits. I opened the door, and she grinned, not even pretending to be shy.
“Hey, Ales,” she said, stepping inside without an invitation. “Is your mom home?”
“At work,” I said, moving aside.
Ashley’s eyes flicked down, checking me out like I was the one in a slutty top. “Yeah,” she said, “I noticed … Can I come in?”
“Sure.”
Ashley shrugged, helped herself to a seat on the couch, and patted the cushion next to her. “You look wiped, Alex. Something keeping you up at night?” She said it with a smile, but the tone was heavy, like she knew exactly what kept me up.
I didn’t sit. Instead, I leaned on the kitchen counter, keeping my morning wood hidden by the angle. “Just finals. Nothing special.”
She arched a brow. “You sure? Because I could swear I saw you at the window last night.”
“What? No. I mean, maybe I—”
She cut me off. “It’s cool. I’d watch too, if I were you.” She uncrossed her legs and leaned back, stretching her arms over her head. Her tits shifted under the fabric, nipples poking through. “Honestly, I think you should join us sometime.”
I laughed, nervous as fuck, and tried to play it off. “Yeah, I bet Maya would love that.”
“She would, actually,” Ashley said. “But that’s not what I meant.” She patted the seat again, slower this time, eyes holding mine like she was reeling me in. “Come on, sit.”
I sat. There was no point resisting; Ashley got what she wanted. That’s what you called hot girl privilege. Her thighs spread just enough that I could see the smooth line of her skin all the way to her shorts.
“You jerked off last night, didn’t you,” she said. It wasn’t a question.
I started to deny it, but she smiled wider. We went back and forth till she said, “It’s fine … It turns me on, thinking about you watching. But I have to know—” She turned sideways, so her face was inches from mine. “Were you thinking about me? Or your sister?”
Her words hit like a punch. My face went hot, and I tried to laugh it off, but Ashley kept staring, waiting for an answer.
“I mean, you’re both hot,” I said, hating how lame I sounded. “But you’re the one blowing her, so, yeah.”
Ashley’s hand landed on my knee, nails digging in a little. “You can be honest. I don’t care. Actually, I want to know. If I dared you, would you fuck your sister?” The way she said it, like she was offering a beer instead of a felony, sent a shock through my body.
I tried to speak, but nothing came out. My brain was all static. Ashley’s hand drifted higher, palm pressing the inside of my thigh, centimeters from the waistband of my shorts.
“She’s not really fully lesbian, you know,” Ashley said. “She talks about guys all the time and sometimes even you ‘Alex is so cute,’ ‘Alex has the best smile,’ ‘I wish I had abs like Alex.’ I think she wants it.” Ashley’s lips brushed my ear as she spoke, and she grinned when she felt me shiver. “Maybe not as much as I do, but close.”
I swallowed. “What are you doing?”
She slid her hand onto my cock, which was now at full mast and straining against the thin athletic shorts. “Making a deal,” she said. “I’ll let you fuck me raw. You can even come inside. But after, you have to promise me something.”
“Promise what?”
She stroked me, and her mouth went to my ear again. “You have to fuck your sister. In front of me. I want to see it. No backing out.”
My brain went blank. Ashley’s hand was too hot, her voice too soft, her logic too cruel. I wanted to say no, but the words wouldn’t come. Instead, my balls were turning blue.
She squeezed me harder. “Deal?”
I nodded. “Deal.”
Ashley grinned, let go of my cock, and stood up. She tugged her shorts down her hips and stepped out of them, revealing a dark thong that was already soaked. She slid it down, too, and bent over to pick it up, making sure I saw everything. She wasn’t shaved completely, just a neat strip above her pussy, the lips glossy and tight and ready.
She straddled me on the couch, yanked my shorts down, and pinned my arms with her thighs. My cock slapped against her inner thigh, leaking already.
Ashley spat in her hand and jerked me a few times, then lined me up at her entrance and sank down in one smooth motion. She was hot, wet and deliciously tight, and the feel of her wrapped around me almost ended it right there. She rolled her hips, grinding down until I was all the way inside, then leaned forward, resting her tits on my chest.
She started to ride, her breath coming harder. She never broke eye contact. “Imagine it’s her,” she said. “Imagine your sister sitting here instead of me.”
She started to bounce, slapping against my thighs, and grabbed my hands, putting them on her tits. “She’s got bigger ones than me, doesn’t she?” Ashley asked. “You think about fucking those tits every night? Or just fucking her?”
I tried to answer but she clenched around me, milking my cock until words were impossible. I pinched her nipples, rolling them between my fingers, and she arched her back, fucking me faster.
“You gonna come?” she said. “You gonna fill me up, or do you want to wait for Maya?”
I grabbed her hips and flipped her hard onto her back across the couch cushions. She let out a sharp laugh that melted straight into a moan as I shoved her thighs wide and drove my cock back into her in one deep thrust. Missionary gave me everything I wanted. Deeper angle, heavier weight and her knees hooked over my arms so she stayed spread and pinned underneath me. Her sports bra was still shoved up; her tits spilled free and bounced every time I slammed in.
“Fuck yes,” she gasped, nails digging into my shoulders. “Use me. Fuck me like you’re gonna fuck her.”
I didn’t answer. I just fucked her harder, watching the way her body took every inch. Her mouth stayed open, her eyes locked on mine and every time I bottomed out she clenched tightly around me. She was soaking wet, and the wet slap of skin filled the calm living room. I kept seeing Maya under me instead. Those bigger tits from last night, the same flushed face, the way her mouth had hung open when she came. The thought made me drive deeper, grinding my hips against hers so my cock pressed hard against her deepest spot.
Ashley pulled me down by the back of the neck until her lips brushed my ear. “You’re gonna come in me,” she said while I was railing her. “Raw … every drop. And then you’re gonna do the exact same thing to your sister while I watch. No pulling out, no backing out, say it.”
“Deal,” I ground out. My hips were already stuttering. The heat of her pussy, the way she squeezed and milked me, the filthy promise in her voice, it was too much. I buried myself to the hilt and stayed there, cock pulsing as I unloaded inside her. Thick spurts filled her, and she locked her legs around me, grinding up to take every drop while she whispered against my ear.
“That’s it. Fill me. Now imagine it’s her tight little incestuous pussy getting flooded. Imagine your sister’s forbidden pussy wrapped around you just like this while she moans your name.”
I stayed buried until the last twitch faded, breathing hard against her neck. When I finally pulled out, a thick strand of cum followed, leaking from her swollen, glistening lips onto the couch cushion. She reached down, pushed two fingers through the mess, and held them up between us, shiny and dripping.
“Remember the deal,” she said, still smiling. “Maya’s next. And I’m going to be right there when you stretch her open and fill her the same way.”
I nodded, cock still half hard and glistening with her and me mixed together. Even if it was taboo, it was the best orgasm of my life. And I wondered if any other would possibly be able to top it. I thought of my sister, and it was so forbidden that I became hard again. Ashley’s grin widened, and I knew I had to fulfill my end on the deal.
Part 2? I fucked my sister while her girlfriend watched
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