It started innocently enough. I was grabbing a beer from the fridge when I heard some...unusual noises coming from my stepsister, Sarah's, room. Curiosity, and a healthy dose of lust, got the better of me. I peeked inside.
My jaw dropped. Sarah, wearing a skimpy babydoll and sporting a fresh tattoo of roses on her thigh, was straddling a Tantaly sex doll. Not just any doll, but one with huge, DD-cup silicone tits and a plump, inviting big booty. She was going to town, grinding against it with a passion I'd never seen before. The sight was undeniably hot.
“Sarah?” I blurted out, my voice cracking slightly. She jumped, startled, her face flushed. "Oh my god!" She tried to cover the doll, but it was too late.
“I…I can explain," she stammered, her black hair falling across her face.
"No need," I said, a sly grin spreading across my face. "Looks like you're having fun. Need a hand?"
Her eyes widened. "You're serious?"
I nodded, stepping into the room. The air crackled with forbidden energy. Soon, I was kneeling before her, lapping at one of the silicone tits while she guided my big dick toward the doll's waiting pussy. The sensation of the realistic material was incredible, almost like the real thing.
The fucking was fast and furious. Sarah moaned, her hands gripping my hair as I drove deeper. I switched to her real pussy. The sounds of our heavy breathing filled the room. She looked at me and said "I want to feel your dick deep inside me!"
"Yeah? I think I can handle that"
I decided to try her ass. Spreading her cheeks I was able to push the head of my dick deep inside. "Oh Fuck!" She screamed.
Finally, after a brutal face fuck on the sex doll and pounding inside Sarah, I felt the familiar rush. "I'm gonna cum!" I shouted, unloading a lot of cum deep inside her small pussy.
Sarah screamed, and started cumming too.
Afterwards, we lay there, breathless and covered in sweat. The Tantaly doll lay discarded on the floor, a silent witness to our newfound intimacy. We both started laughing. "Well that was interesting."
As we start to explore the rest of each others bodies, it occurs to me that this might be the beginning of something very, very good.
