I walked into the kitchen and there she was, my older sister Lisa, bent over the counter in nothing but a tiny tank top that looked two sizes too small. Her massive breasts hung heavy and full, the fabric stretched so tight the nipples poked out like they wanted to tear through. Those huge tits swung slightly as she reached for something, and my cock went rock hard in my jeans before I could even think.
"Fuck, Lisa," I said, voice already rough. "You trying to kill me walking around like that?"
She straightened up slow, turning to face me with a dirty little smirk. "What, these huge tits bothering you again, little brother? You've been staring at my massive breasts since we were teens. Thought you'd be used to them by now."
I didn't bother answering with words. I crossed the room, grabbed her by the hips, and yanked her against me. My hands went straight to those massive breasts, squeezing the soft, heavy flesh through the thin top. They overflowed my palms, warm and perfect, the kind of huge tits you dream about burying your face in. Lisa moaned low and dirty, pushing them harder into my grip.
"Go on then," she whispered. "Suck on your sister's huge tits. You know you want to."
I pulled the tank top down in one rough tug. Those massive breasts spilled free, big pink nipples already stiff. I leaned in and sucked one deep into my mouth, tongue flicking hard while my hand mauled the other one. Lisa grabbed the back of my head and held me there, grinding her hips against the bulge in my pants.
"That's it, baby brother. Suck those big tits like you used to when you thought I was asleep. Fuck, your mouth feels good."
I switched to the other nipple, biting just hard enough to make her gasp, then licked the sting away. My free hand shoved between her legs. She was already soaked, no panties, just smooth wet pussy lips waiting for me. I shoved two fingers inside her without warning and she bucked against my hand.
"Goddamn, you're dripping," I growled against her huge tits. "Incest got you this wet?"
"Always," she panted. "Especially when it's my little brother's fingers in my cunt while he plays with these massive breasts."
I dropped to my knees right there on the kitchen floor, yanked her leg over my shoulder, and buried my face between her thighs. My tongue fucked into her pussy while my hands reached up to keep squeezing those huge tits, thumbs rubbing her nipples. Lisa rode my face hard, those massive breasts bouncing above me every time she moved.
"More," she demanded. "Suck my clit. Make your sister come on your tongue."
I did exactly that, sucking and licking until her thighs shook and she came with a loud, filthy moan, flooding my mouth. Before she could catch her breath I stood up, spun her around, and bent her over the counter again. I ripped my jeans open, freed my throbbing cock, and slammed into her from behind in one hard thrust.
"Fuck yes," Lisa cried out. "Give me that cock, brother. Pound my pussy while you watch those huge tits swing."
I grabbed her hips and fucked her deep and rough, the wet slap of skin loud in the kitchen. Every thrust made her massive breasts bounce and jiggle wildly. I reached around and grabbed them both, using them like handles while I drove into her.
"These big tits are mine," I snarled. "My sister's huge fucking breasts. Say it."
"They're yours," she gasped, pushing back to meet every thrust. "My massive breasts belong to my brother. Fuck them harder. Use them."
I pulled out, spun her to face me, and shoved my cock between those huge tits. Lisa pressed them together tight, creating a perfect slick tunnel. I fucked her massive breasts while she licked the head every time it popped out the top.
"Look at you," she said, voice filthy. "Titty-fucking your own sister. You love these huge tits, don't you?"
I answered by shooting my first load all over them, thick ropes painting her massive breasts and neck.
Lisa scooped some up with her fingers and licked it off, then pushed me down onto a chair. She straddled me, sank down on my still-hard cock, and started riding.
We fucked like that for what felt like hours—her massive breasts in my face, my mouth on her nipples, her pussy gripping me tight while she whispered the dirtiest incest shit imaginable. "Come in your sister's cunt again." "These huge tits are made for you." "Breed me, little brother."
By the time we finally collapsed, sweaty and spent, her massive breasts were covered in cum and bite marks, and we both knew this was only the start.
