All characters are fictional and over the age of 18.
We arrived home in the dark about 30 minutes after Lizzie swallowed me in the backseat of the car. Though I came hard, a fresh erection was in the making as I imagined our planned rendezvous in the shower later that night.
I efficiently helped my dad unpack the car. He seemed amazed at my new found proficiency with unloading all the ski gear and placing it neatly on the storage shelves in the garage. Normally I would have dragged my feet through the unpacking over several hours, with many breaks to snack, text friends, watch TV, or do whatever else I could to avoid this task. But tonight, I knew that the only thing standing between me and Lizzie being together again was a mountain of luggage and ski equipment in the back of the car.
As I unpacked, my mind wandered to our time in the chalet last night. My cock swelled as I recalled her body surging forward each time I buried myself in her, and the way she looked over her left shoulder at me as I filled her. I recalled her biting her lower lip while easing her sweet sex down around my shaft. I looked at the ski gear now stacked in the garage and knew it was time.
My dad thanked me for being so quick with the unpacking. I rushed upstairs to my bedroom as they relaxed in the den. I could hear the water running in mine and Lizzie's bathroom shower. We shared a "Jack and Jill" style bathroom between our bedrooms. Each bedroom could access the bathroom directly, and there was access to the bathroom from the outside hallway.
We would have to be careful as mom and dad were still awake. But it was clear that Lizzie did not want to wait until they were asleep, and neither did I. I locked each of the three doors to the bathroom as Lizzie let the warm waters of the showers drench her soft skin. I then stripped naked, leaving my clothes in a pile on the tiled floor next to her leggings, panties, bra, and sweater.
I stood in the middle of the bathroom fully erect, admiring my little sister's figure through the steamed glass of the shower, recalling how I would gawk at her over the past few months, pretending to grab deodorant or a hairbrush from the bathroom as she showered. I would fantasize about joining her in the shower, kissing her under the deluge of warm water above.
About to make this fantasy a reality, I carefully opened the shower door and saw her. She was directly under the rainfall shower head that was in the middle of the tiled ceiling of the shower. Her soaked hair was over her left shoulder as the warm water beaded up on her tan skin and ran down, taking in every inch of her perfect torso, abdomen, groin, thighs, calves and feet before entering the drain in the floor.
I pitied the water for transiently gracing her skin before leaving her forever on its journey to the drain. I had the better part. For I would touch her, taste her, smell her to my heart's content.
She smiled at me as the steam evaporated away with the opening of the door. She reached out to me. I stepped into the shower, closed the door and met her in the middle under the shower head, my body now becoming drenched by the warm water.
We embraced for a moment before our hands began to explore our wet bodies. It was as if we never touched before. I lavished her neck with kisses, my lips lingering in each spot while my tongue grazed her supple skin. I told her how much I missed her. She moaned my name under her breath as her hands roamed my chest.
My cock was firm up against her belly. My hands trailed along her back to her ass. I squeezed her firm, wet cheeks and brought her body tight up against mine. I lifted her up by her ass and she wrapped her thighs around my pelvis. I took a step towards the tiled wall of the shower and gently pinned her petite frame against the wall. I adjusted the shower head so that the warm stream continued to rain down upon us.
Our tongues swirled around as we kissed deeply, devouring each other's mouths. I tore my lips away from her and moved my hands to her hips, looking into her deep blue eyes. I lined her entrance up to my swollen tip. Lizzie's eyes rolled back in her head and she bit her lower lip as I lowered her slowly and gently over my shaft. I took my time as my little sister's tight hole accepted me, inch by inch. My girth stretched her velvety walls once again until my base was at her outer lips.
She locked her ankles around my ass and we looked into each other's eyes as we relished each new moment of our incest.
Mom and dad were in the den just downstairs watching the late local news as I fucked Lizzie up against the shower wall with long, slow, deep strokes. I moved my hands from her ass and placed my palms up against the tile, which changed my angle just enough to illicit low, guttural moans from Lizzie with each thrust. Her breath became ragged as we made love under the torrent of warm water, our bodies in a perfect rhythmic unity.