Liv closed the door behind her, sliding the old bolt lock into place. Having nothing else to do I reached for the shower knob and switched it on. The water pressure was pretty good, but dad was right; the water did not heat up much. Tentatively I walked under the flow, feeling the clean water splash over my skin. It wasn’t hot, but it was definitely bearable. Liv clicked her tongue behind me. I turned to her.
“What?”
“Are we really going to take a shower in our suits?” She said, seemingly annoyed.
“… yes?” I tried, not sure if it was a trick question.
“Come on, no way you’ll feel clean if you do.”
I shrugged. Objectively I agreed with her. It was hard to get to all the especially dirty places with a suit on. There was just the one small problem of showering with my naked sister. My insanely attractive, beautiful naked sister.
“Not like it’s anything we haven’t seen before,” Liv pointed out.
“Again, last time we ah… saw each other, we didn’t exactly look like we do now.”
“And that’s a problem for you?”
I shrugged again. If I was being honest with myself, I wanted very much for Liv to take her bikini off. And it almost seemed like she was pushing for it. However, her seeing my dick, an inevitably erect dick, gave me pause. What if she took offense?
“Is it a problem for you?” I said, trying to deflect. It didn’t work.
“Nope,” Liv said. “And we’re wasting hot water. Leave your trunks on if you want. I want to feel clean.” With that my sister reached behind her and untied her top. It fell away to reveal two petite and perky breasts, with a pair of lovely nipples. Without skipping a beat, she shimmied out of her bottoms as well. I was surprised to see my sister clean shaved, with two cute pussy lips above her thigh gap. “It’s bikini season.” She said in response to my look, as if this was a completely normal situation, and my mouth wasn’t on the floor. Hanging her swimsuit pieces on the door knob she came over to join me, sliding right past me into the path of the shower head. “Ahhh” She sighed as the water cascaded over her body.
Her back now turned to me, I was left staring at her incredible ass. I tried to take a breath, but found my soul might have left my body. This was no stiff breeze, this was a hurricane, and my cock was responding in kind. It strained against my swimsuit, hard as a rock. I stared for most likely longer than I should have. Liv seemed oblivious to my wandering eyes, content to rinse herself in the lukewarm water, eyes closed.
After a while she reached for her soap, and started lathering herself up. Watching her hands slide over her own body, working up and down her arms and legs, over her boobs and butt, it drove me absolutely crazy. I was having trouble registering what exactly it was I was feeling. My kid sister isn’t a kid anymore, I thought again. At that moment she wasn’t exactly my sister either. She was only a beautifully sensual, naked teen. She washed most of her body as if I wasn’t there, with standard efficiency. Still somewhat shell shocked, I wasn’t quite sure what I was supposed to do. Her voice snapped me out of it.
“Wash my back?” Liv finally asked, peeking an eye open to look over at me. Her arms were held up close to her chest, so that I no longer had a view of her boobs. She was still turned away from me too, so while her naked ass was still in my face, her posture seemed almost modest, as if, despite her boldness thus far, she was suddenly shy about being naked in front of me.
“Yeah,” I said, almost stumbling over the word. She turned completely away from me again and into the water stream, holding out her soap. I got closer to her, taking the bottle from her and staring at her flawless back. Still somewhat uncomfortable with the idea of inadvertently shoving my erection in her face, I left my trunks on, as inconvenient to my own comfort as it was. I lathered her back quickly, running my hands over her smooth skin. “Alright, rinse.” I said, without really thinking about what that entailed.
Liv spun around, coming face to face with me, her full front on display. I tried to keep my eyes on hers, but couldn’t help but do a once over. She must have seen my boner tenting my swimsuit, roughly level with her lower stomach, but she said nothing about it. No accusations of me being gross or a pervert. Only “thanks, your turn.”
We switched places. I started lathering myself up while she put shampoo in her hair. I tried to keep my gaze on the wall under the showerhead, not sneaking needless glances behind me. I did my arms and upper body easily enough, but was struggling with my lower half. My dick was showing no signs of going down without attention, and it was causing a problem with the waistband and lining in the swim trunks, making it hard to effectively lather my nethers. I heard Liv snicker.
“Just take the damn thing off.” She said from behind me. I was surprised how close her voice sounded, Liv must have finished with her hair and was waiting for another rinse. “What are you messing around for?”
“I have a bit of a situation here.” I said, not looking at her.
“What? Your boner?” She giggled. “You think I’ve never seen a hard dick before? I’ve seen yours for christ sake, you’ve walked around the house in boxers since we were like ten! C’mon Will, you’re making this harder than it needs to be. Pun not intended.”
“Fine. I just don’t want you to get any wrong ideas,” I said.
“You’re such a child. You know women take that as a compliment, right? When a guy is hard because of them?”
“Yeah but guys usually don’t get hard because of their sister!”
“Ahah! It is hard because of me!”
“That’s not…” I sighed and turned around. Liv was still naked, still gorgeous, and still wearing a shit eating grin. “Can you go ten seconds without messing with me?”
“Not a chance. Now get those off and get yourself clean. I’ll get your back.”
I obliged, swiping my trunks down and tossing them into the corner. My cock sprang up, finally free, still at full attention. I turned back toward the shower head, but not before I caught Liv giving me a good return once over. I could’ve sworn her hazel eyes lingered on the length of my dick. I dismissed it again as a horny brain seeing things.
I stayed hard through the rest of our shower. Liv’s soft hands running up and down my back did not help. A few times I considered just going balls to the walls and jacking off right there in front of her. I held myself back though, and before I knew it she was telling me to rinse and switch again. I got one last look at my slender sister and her beautiful body, before I decided I shouldn’t stare. I turned away and picked up my towel, drying myself off. She followed me out soon after, picking up her two towels, one for her hair and one for her body, and wrapping herself up. As if on cue dad banged on the door.
“You two almost done in there?”
“Yep, just drying off!” I yelled back. I slipped on my boxers, though they still tented embarrassingly around my dick. Liv hid a smile and I shot her an evil look. “It’s not funny.”
“It really is,” She said. “How are you going to hide that thing from them?”
“Well apparently I’ve been swinging it around since I was ten, so maybe I don’t have to.”
“If I was you, I couldn’t imagine waving my boner around in front of mom. I couldn’t have my boobs out in front of dad.”
“Oh but you could have them out in front of me?” I asked. Liv just shrugged. “Well I wasn’t planning on having this problem for this long, if you must know,” I continued. “But someone had to suggest a double shower.”
“Hey, I never said you couldn’t take care of it.” She raised her hands up as if to disavow the blame.
“Yeah right, we crossed the nudity bridge. Jacking off in front of each other is the next logical step.”
“Wait a minute here, who said in front of each other? You sir, could have easily done it in the corner over there. Next time just let me know, and I’ll look away while you do.”
“If it were that simple,” I said.
“Don’t see why it isn’t.” Liv replied. Before I could say something else, she unlocked the door and let herself out. Improvising, I wrapped my towel loosely around my waist to hide my erection. With my sister’s body covered it was wilting somewhat, but remained decently apparent. Dad was waiting in the living room with his own stuff.
“Bout time,” He said. “Any hot water left?”
“Some.” I said, and moved over to the couch my bag lay on. Mom was reading quietly on another chair. I messed around with my bag. Usually I slept naked, but if I was going to be sleeping in the main room I’d have to at least lounge around with something on. The shower turned back on as dad got in. It was getting pretty late and I was beat. My dick relatively calmed down, I hung up my towel and started sifting through my things, wondering how I was going to make this sleeping arrangement work.
“What are you doing?” It was Liv from above me, she leaned over the railing. “Bring your stuff up here already.”
“Aren’t you staying in the second bedroom?” I looked at her quizzically.
“Yeah, but you are too. There’s plenty of space, we’ll share it.” She shook her head as if it were obvious. “Get up here, dumbass!”
**
Growing up, vacation room assignments in our family had gone through three phases. When we were really little, it had been one room, or me by myself. I had very few memories of vacations with this set up, and what few I did recall were very vague. Then, when me and Liv got older, and went through our friend stage, it was a room for the parents and a room for the kids. Often we’d get two twin beds, but it hadn’t been uncommon for us to share a bed. I remembered these vacations fondest. Late nights with our sheets propped up, giggling to each other as co-conspirators, pretending to be asleep when mom sent dad to tell us to go to bed.
Then we became teens, and things changed again. It became me and my dad in a room, my mom and sister in the other. It made sense as two teenagers in need of more peer related privacy. I’d assumed that wouldn’t be the case for this lake trip, my sister and I mature enough to let our parents sleep in the same bed again. But I’d also assumed we wouldn’t be returning to the sibling sharing aspect either. So it was safe to say Liv’s call caught me off guard.