I came home late and found my sister Lisa in the kitchen wearing nothing but a tiny tank top that her huge tits were spilling out of. Her nipples poked through the thin fabric like they wanted to rip it open. "Fuck, Lisa," I said, staring straight at her chest. "You know what that does to me." She smirked and squeezed her tits together, making them look even bigger. "Then do something about it, little brother. I've been waiting for you to stop pretending you don't want to fuck your own sister."
I didn't hesitate. I grabbed her by the waist, spun her around, and yanked that tank top down. Her massive tits bounced free, heavy and round with thick pink nipples. I buried my face between them, sucking one nipple hard while I squeezed the other tit, feeling the soft flesh overflow my hands. Lisa moaned and reached down to grab my cock through my jeans. "Get it out. I want that dick in my mouth right now."
She dropped to her knees on the kitchen floor and unzipped me. My cock sprang out, already rock hard. Lisa wrapped both hands around it and licked the head like she was starving. "God, your cock tastes good," she said, then shoved it deep into her throat. She gagged but kept going, bobbing her head while her huge tits swung beneath her. Spit ran down her chin and dripped onto her chest. I grabbed her hair and fucked her face, watching my dick disappear between her lips while her tits jiggled with every thrust.
After a few minutes I pulled her up, bent her over the counter, and ripped her shorts down. Her ass was round and her pussy was already dripping. I slapped her ass hard, then lined up and slammed my cock straight into her wet cunt. Lisa cried out, "Yes, fuck your sister! Pound that pussy!" Her tight walls gripped me as I drove in balls-deep. I reached around and grabbed her massive tits, using them like handles while I fucked her from behind. Each thrust made her tits bounce and slap against the counter.
I flipped her over onto the kitchen table so I could watch those tits while I fucked her. Lisa spread her legs wide and I shoved back inside. Her huge breasts shook with every hard stroke. I leaned down and sucked on her nipples again, biting them just enough to make her yelp. "Harder," she begged. "Fuck me like you own this pussy." I pounded her faster, the table creaking under us. Her juices coated my cock and ran down her ass.
We moved to the couch next. Lisa climbed on top and lowered her dripping cunt onto my cock. She rode me hard, her massive tits bouncing right in my face. I grabbed them, squeezing and slapping them while she ground down on me. "Look at these big fucking tits," I growled. "My sister's nasty tits bouncing while she fucks her brother." Lisa moaned louder and started rubbing her clit. "I'm gonna come all over your cock," she said. Her pussy clenched tight as she came, soaking me.
I flipped her onto her back and kept fucking her through the orgasm. Her tits were red from my hands and mouth. I pulled out, straddled her chest, and slid my cock between those huge tits. Lisa pushed them together and I tit-fucked her fast, the head of my cock hitting her chin each time. "Come on my tits," she demanded.
"Cover your sister's big tits with cum." I groaned and exploded, shooting thick ropes across her chest and neck. She rubbed it into her skin, licking some off her fingers.
We weren't done. Lisa got on all fours again and I took her from behind on the floor, her tits dragging against the carpet while I slammed into her. We fucked until we were both sweaty and shaking, then collapsed together. Lisa looked at me with a dirty grin, cum still glistening on her huge tits. "Next time you're fucking me in Mom's bed," she said. I was already hard again.
