I collapsed onto the couch, residual jet lag and hard scrubbing having done me in pretty well. I was covered in sweat. Despite the sun sinking low into the sky, the heat had not abated. Taking a breath, I watched mom finish up around the stove, finicking with the door. Dad was in the bathroom still, messing with the water pressure. Liv had gone back up into her room, but there was a loud creak from the loft ladder as she descended. The couch I was seated on was to the right of the ladder, so I glanced behind myself and up at the noise.
I was met with one of the most amazing asses I had ever seen in my life. It took me a second to realize it belonged to my sister. I snapped my head away, embarrassed even though I had no reason to be.
“C’mon WIll. We have some daylight left.” Olivia said as she jumped the last few rungs and came to stand in front of me. “Swim time.” My sister had changed into a red bikini, and it was all I could do not to stare.
The year and a half had been kind to Liv. Maybe too kind, seeing as she was my sister. My kid sister! I had to remind myself. ‘Kid’ sister no more. Olivia had a September birthday, and so was eighteen going on nineteen. The last time I’d seen her she’d been barely seventeen, and the last time I’d seen her in a swimsuit she’d not even been sixteen, a far shot from a woman. It was a young woman that stood in front of me now. I knew she’d gotten really into swimming, but hadn’t realized the wonders it worked for her figure. She was skinny and toned, and tall like me. She’d filled out, her boobs and hips rounding out beautifully. And that ass, oh my god that ass. I’d gotten a great look as she came down the ladder. Firm and shapely, it moved in all the right places, while still being perfectly proportionate to her size. And Liv had always been cute.
Fair skin dotted here and there with the odd freckle, she still had that early summer paleness. Sandy blonde hair framed her sleek features, her lips pouting impatiently at my failure to be ready. She had hazel eyes, a color I had always thought too pretty for her own good. Mixed with her newly matured features, it was all a deadly combo. Add on her choice of bikini, and I was having very sudden, and very dirty, intrusive thoughts. The swimsuit left very little to the imagination, definitely an unorthodox choice for what was supposed to be a family only vacation. Small triangles covered her breasts, and an equally small section of fabric made up her bottoms. I’d already caught a glimpse of the back as well, which was little more than a thong.
I tried to focus on her face and eyes. It was harder than I ever remembered it being.
“Give me a second, I’m exhausted.” I yawned, half to distract myself, half because I was in fact exhausted.
“Oh come on,” Liv insisted. “Don’t you feel gross from the drive, and all the cleaning? And who knows when dad will have the shower ready.”
“Not soon.” He shouted helpfully from the bathroom.
“Go with your sister,” Our mom said smiling. “You guys need to catch up.”
“Alright, let me get changed.” I reached into my bag and looked for my own swimsuit. Finding my trunks I ducked into the master bedroom for some quick privacy. Our parents had fixed it up well. The stained bare mattress I’d seen on arrival was now a nicely made bed that looked almost welcoming.
I shed my shorts and shirt, and took a moment to glance at my reflection in the full length mirror hanging on the back of the door. I’d taken care of myself in college. Mostly due to a freshman year scare. One day in the second semester of that first year, I stepped on a scale in the student gym. Learning I’d put on a few extra pounds (more than a few) without feeling any heavier, was alarming enough to get me back in the weight room and out on the track. I wasn’t super cut or anything, but I liked my figure. I was about six one, and weighed close to two hundred pounds. Most of it was muscle in my arms and legs. I didn’t have a six pack, but had thankfully prevented any college beer belly from forming. I shared my sister’s sandy blonde hair, but my eyes were blue, and my skin was a little darker, taking after our dad’s Italian side. I was still fair, and would burn easily enough, but not as pale as I’d seen my sister to be. She did tan easier than me however, and I was sure by the end of the week I’d reclaim my spot as the paler sibling.
I stood for an extra second than I needed to, completely naked. The heat and, though I didn’t want to admit it, my sister’s swimsuit choice had caused me a decent chub. I gave my dick an impromptu squeeze. I was above average in size, around seven inches or so, though I hadn’t bothered measuring it since middle school. I was fairly confident, and though I’d only had a few girlfriends I’d never gotten complaints, so I didn’t dwell on it too much. I gave it another brief jack, and it twitched in my hand. Bad idea. I told myself, knowing my swimsuit would do little to hide a full erection should I start sporting one. I hadn’t managed a steady girlfriend while abroad, and I’d been traveling so much the last few weeks I’d had few opportunities to relieve myself. I was pretty fucking horny. And thinking about my gorgeous sister waiting for me behind the door was not helping. A brief flash of horny logic wondered if I had time to jack off in the bedroom. I shook my head and slipped into my swimsuit. No fucking chance. My family thought I was just changing. I would have to wait til later that night. I could rub one out in the shower.
A few deep breaths to make sure no unwanted guest poked his way through my trunks, and I grabbed up my clothes, leaving my shirt off, and let myself back into the living room. Liv was gone. I gave my mom a questioning look.
“She’s on the porch waiting for you. Or should be.” Her face changed to one of classic parental seriousness. “Be nice to her. She missed you being gone.”
I rolled my eyes at her. “Yeah yeah, I’m always nice to her.”
Liv was waiting for me on the porch. It was a nice deck. Made of the same wood as the cabin, there was a small outdoor fire pit and chairs, as well as a small grill. A lazy breeze drifted off the lake too, making it already cooler than inside the cabin. My sister turned and beamed at me.
“You’re sooo slow.” She teased. “Do you think we need shoes?” Liv then asked, appraising the path to the water.
“I don’t think so, I don’t see too many rocks or anything.” I said.
“Alright then, come on, I’m so hot.” She took off, bounding towards the lake. I was amazed at her energy. I suppose even with the cleaning, we’d been cooped up in the car most of the day. I couldn’t help but stare at her ass as she went, it bounced invitingly along with her long legs. My dick rolled over and I groaned inwardly. Hopefully the water’s cold, was all I could think.
My assessment on shoes was correct, until we got to the sand. It had spent all day baking in direct sunlight, and was blazing on the bottoms of our feet. I laughed as Liv hopped and skipped from one foot to the other, exclaiming at the hot stings as she tried to make it to the water.
“Alright then tough guy.” She called back at me, once safely submerged to her ankles. “Let’s see how you like it.”
I tried to act tough, walking calmly to where she waited, but the sand really was hot as shit. It was her turn to laugh as I stumbled the last few feet, practically diving for the cool enclosure of the lapping lake water.
“Told you.” She said, smirking. “Shut up.” I replied, in good humor.
The water was cold, and as hot as we were it still took some time to get used to. We waded out slowly, toward what looked to be a floating platform made from barrels and wood. It was a beautiful lake. Huge and bent, we were located in a nook to the east, the sun setting directly across from us. The largest part of the water was hidden around a bend that gave us an equal amount of privacy. The glowing orange disc of the sun was almost completely hidden behind the trees across the water, and I could tell it would soon be dark. We had unfortunately used up most of our day driving and cleaning. The water felt great though, washing the sweat and dirt from our skin. We took turns diving under, both of us coming up for air gasping and calling the other a wimp.
Liv had asked me, when I first got home, about my trip abroad and my second year of college. I said it was fine, I had fun, and had lots of new stories. I had asked her about her senior year of high school. She said it was fine too, but she was excited to move on to something else. I knew she was considering different college offers, but hadn’t decided yet. Other than that, there wasn’t a lot to say, and I feel like despite what our mom had said, there was little to catch up on. We had that sibling bond, a few words here and there and we slipped right back into our old roles.
We reached the floating platform. It was pretty much just weighted barrels and wood, making a tiny deck held down by an anchor. Liv climbed up on top of the makeshift deck and challenged me to throw her off. Then giggled as she planted her feet in my face anytime I tried to pull myself up. The view I was getting of her toned bottom half, barely covered by thinly stretched fabric, did not go unnoticed. However the water was having the desired effect on my horniness, and I stayed modest.