Pool Party

This story contains very mild and brief piss play.

When I woke up, it was still dark out. I glanced at my alarm clock, and it was only 3:30am. God, was I ever going to get a full night's sleep? For the last couple of weeks, I was having trouble sleeping, and most of the time I would wake up with a raging erection which I would have to take care of before I could fall back asleep. I suppose that wasn't entirely uncommon for a nineteen year old guy like me, but this problem stemmed from a particular circumstance that had been happening for about a month now.

My dad surprised the family with a pool last summer. Let's just say, we were thrilled. Honestly, if anyone who has a pool says that it's not fantastic and a shitload of fun, they're lying to you. We were out swimming in it every night, me and my two sisters and my parents. I was surprised how much my mom and dad wanted to use it, but they didn't use it nearly as much as we did. My two sisters, Julia and Hannah, wore their bathing suits around the house practically all the time now. Julia is younger than me by a year, and we always call her Jules. Hannah is two years older than me, and our new pool didn't seem to motivate her to move out any time soon. We hated having to cover the pool during the winter, but come spring we were back out there.

So now, the current circumstance that was causing my nighttime problem.

I guess I should preface it by saying that my family is kinda liberal with certain things. Nudity being one of them. Yep, it's one of those stories about a family swimming naked together! Seriously, my sisters and I took baths together until we were way too old, so it wasn't a big deal. My sisters are naked all the time around each other, since they share a bathroom and up until a few years ago a bedroom. I've used their shower before while they were in there, so we were used to being nude around each other if not necessarily with each other. So when our parents told us this summer that they were interested in using the pool au naturale, we took it pretty well. My sisters laughed a lot about it, and that first time as a family walking out of the house in just towels and dropping them at the pool was interesting. Let's just say, I had to get in that damn water quick! I wasn't about to ruin this first time by letting anyone see me rock hard. And my sisters were quick to follow too, each one having decent jugs and pretty sweet bodies.

If you've ever swam naked, then you know how blissful and wonderful it really is. Little compares to the feeling you get being completely free and natural in a nice cool swimming pool. Once we were all under the water, and our bodies were mostly hidden, it wasn't awkward at all. In fact, we kind of forgot about it after a while. Mom and dad being naked kind of kept things from being sexual. No offense to them, but seeing my dad's hairy body and my mom's sagging boobs didn't really arouse me. Seeing Julia's B cups and tight stomach, and Hannah's more generous C cups and nice round ass, was a different story though. So I fought to keep them out of a sexual context and just enjoy the pool. I didn't want to ruin our wonderful swimming routine for anyone by getting all weird and dorky.

So eventually, after about a week, everyone was basically totally comfortable with our family being amateur nudists. Mostly it was in the pool, but it spilled out into our enclosed patio and sometimes even in the kitchen right after a swim. I always kept my towel handy, but Julia and Hannah never covered their tits. If I suspected that I would have a problem hiding my arousal, I would just place the towel casually in my lap. I think my parents never thought anything of it, but I know my sisters knew what I was doing. They always smiled when I grabbed my towel, as if they knew what they were doing to me.

The first night I had a problem sleeping was right after a late swim with just me and my sisters. Mom and dad had gone to bed long ago, and it was a really warm night. So we all stripped out of our pajamas and raced out to the pool. After a lot of splashing and fun, we just relaxed and floated along. As I drifted on my back past my sisters, I knew they were probably staring at my penis, which was clearly in view. My ears were just under the water level so I couldn't hear them. But when I glanced over at them, they were both smiling brightly at me.

"What are you two staring at?" I asked boldly. I purposely stayed on my back, leaving my penis just out of the water as I floated up to them.

Julia blushed and turned her head away, but Hannah's smile just got bigger.

"Your dick, dummy," Hannah said, laughing.

"Hannah!" Julia gasped, slapping her on the arm. This made both their tits jiggle a bit.

I purposely floated right up to them, keeping my penis close to them to freak them out. "You perverts."

Julia couldn't keep from glancing straight at my cock, but quickly grabbed my arm and dragged me under the water. I wrestled with her a bit, feeling her soft body all over as I groped and tugged at her. Hannah stayed out of it, just laughing at us.

"Ew gross!" Julia said in mock disgust. "I felt it touch my shoulder."

We all busted up laughing. We were all used to each others' naked bodies by now, so it was really no big deal. Or so I thought.

"No fair, you got to touch it," Hannah said, pretending to be sad. "I'm jealous!"

"At least you didn't get felt up by your own brother," Julia said, just to get at me.

I roared with fake anger and lunged at her, pushing her under the water and away from Hannah. "You little twerp!"

"Help! Help!" Julia cried out, laughing too hard and getting water up her nose. I let her alone while she coughed it out.

"Still jealous?" I asked Hannah, not even realizing that all this activity had made me semi-hard.

Hannah rested back on the ledge of the pool on her elbows, making her chest stick out proudly for me to see. Was she doing that on purpose?

"Maybe," she smiled deviously. "I've seen you naked plenty by now. I can pretty much guess how disappointing it would be to actually touch you."

I splashed water in her face, which broke her calm demeanor and started another wrestling match, this time with her. We both rolled in and out of the water, holding each other's arms and legs and trying to submerge the other one. Julia cheered us on from a few feet away.

I noticed that Hannah's thighs kept moving between my legs, probably from her trying to pin my legs down with hers. But every few seconds, I felt her soft skin brush against my balls and my almost erect penis. I didn't think too much about it at first, but I could tell that after the fourth or fifth time, she was doing something on purpose. I didn't fight the last time she did it, and her leg kept in contact with my crotch for a good few seconds. My erection twitched against her soft thigh, and I know she felt it. I couldn't see her face through the wrestling, and we both kept up the appearance that we were trying to best each other. Julia was drifting off to the side, letting us have fun while she just relaxed. She couldn't see what was happening really.

I had to test this, to see if Hannah was really trying to pull off some funny business. This time, I reached my arm down to grab her leg, and moved it between her thighs like I was going to hoist her up onto my shoulder. She squealed in a delightfully fake protest, and my forearm went right up into her crotch. I felt very little hair and a lot of soft flesh touch the top of my wrist. She pretended to pound on my back, but really she just braced herself on me so I could lift her. I could have easily thrown her over my head the way I was holding her, but I really wanted to touch her vagina now. I don't know what came over me, but I moved my arm back just a bit and rotated my hand upward so her pussy landed flat on my palm. I pretended to lift, and my hand grabbed her genitals blatantly. She gasped, and kept a big smile on her face, but her fingers dug into my shoulder where she was bracing herself, and I could tell she was totally caught off guard. But there was no fighting against me, or squirming her hips to avoid the intimate contact.

Neither of us were keeping up the appearance of wrestling anymore, and we both forgot about Julia at the other end of the pool floating aimlessly. Hannah's eyes met mine and her devious smile told me she wasn't in total disapproval of this. I kept my hand there, quite enjoying the soft, and very smooth, sensation of her vagina resting on my hand. I had to withdraw after a few seconds, though, or else it would get infinitely weirder. I slid my hand away from her, purposely rubbing her lips with my middle finger as I pulled away. I swear I saw Hannah's eyes close just for a second as she enjoyed the sensation. But there was now way we could continue what we were doing with Julia right there. And I didn't even know if Hannah was seriously wanting to do anything more than this innocent accident.

"I win," I said, and flung myself backwards into the water.

Inadvertently, this made my rock hard penis fling out of the water and slap my belly as I swam on my back, and it was an embarrassingly loud sound. Julia was swimming over to us as I did this, and her jaw dropped when she saw how excited I was. Hannah was laughing hysterically, both at me and Julia.

"Oh my god," Julia whispered, as if our parents or someone else could hear us. "Are you hard?"

Hannah was gasping for breath. "It's cuz my boobs are bigger than yours."

Julia lunged after Hannah, beginning another wrestling match. I watched them play around with aroused fascination, somehow knowing that I would be replaying this somewhat lesbianic scene while I stroked off my rather intense erection. It wouldn't be the first time I had masturbated while thinking about my sisters. Hannah and Julia had always been fond of wrestling with each other and roughhousing. But doing it naked was much more exciting for me.

"Ok ok!" Hannah protested finally. "I give up. I have to pee really bad, just let me go!"

"Apologize to him for the boner," Julia said.

Hannah was shocked that she was bringing it up again, but of course I was still really hard. And we would all be getting out of the pool together, so they were going to see it again.

"Sorry for making your penis big and hard," Hannah said with a laugh, but her eyes said something else to me. "And long."

Julia punched her arm this time, and we all swam to the ledge. Hoisting our naked, dripping bodies out of the water, we toweled off and walked inside. Hannah ran inside first, apparently not lying about having to pee. Julia was right in front of me, and seeing her naked ass swaying only inches away from my stiff penis made me lose my balance. I ended up taking a big step forward and poking her ass cheek with my boner.

"Sorry!" I whispered, now that we were in the house.

Julia giggled, and turned around to face me. She kept her eyes up and away from my crotch, but she boldly reached out and grabbed my dick with her hand. My eyes went wide, and we both just froze for a second, her eyes just as wide but her face about to crack up in laughter. She acted like she was drunk or something, and squeezed my penis in her hand.

"Julia!" I gasped, instinctively pulling my hips away from her. My penis slid out of her grasp in a wonderful sensation of friction.

"It really is big," she said, very quietly. Her eyes finally drifted down to it. "Hannah got to touch it a lot more than me tonight."

I didn't know what to say, I was shocked. So she had noticed what we were doing in the pool earlier. What did this mean, though? Was she jealous?

Without saying another word, she stepped forward and grabbed my penis again, this time holding it firmly and staring straight at it. Her thumb gently caressed the underside of the shaft. She nervously glanced up at me briefly.

"Is this ok?" she asked softly.

I just nodded dumbly, unable to speak. It felt so fucking good, and I was so horny from all the horsing around. Her eyes darted back down to my penis in her hand. I still don't know why I did it, but a feeling of bold confidence washed over me suddenly and I reached my hand out and grabbed her tit. Julia inhaled sharply, and squeezed my dick hard. I relished the feel of her soft, firm flesh in my hand. We had never been this intimate before, never even close. But now she was nearly masturbating me while I squeezed her breast.

"I like that," she breathed, and I thought I was gonna cum right then and there.

"Oh god..." I sighed, making her smile. She reached her other hand up and cupped it right underneath the tip of my penis.

"It's ok," she said, her eyes meeting mine for just a second before looking back down at what she was doing. "You can let it go if you want."

When I realized that she was cupping her hand in front of my dick to catch my cum, and when I felt her grip tighten and she openly tugged on my penis, I groaned involuntarily and braced myself on her tit while I came spectacularly. Her cupped hand caught only a bit of the huge load I let go all over us both. I spurted thick white cum heavily onto her stomach where she aimed it, and trails of slimy sperm landed across her hand where she intended to catch it. I just kept firing thick ropes of cum over and over, unloading all my tension for her.

"God, you really needed that!" Julia said, quietly but excitedly. She left the cum on her stomach alone, though it was dripping obscenely down her body now, and she brought her hands up to her face to see my cum close up.

"I'm so sorry, Julia," I started, even in my orgasmic haze knowing that we shouldn't have done that.

She just shook her head and smiled at me. "Don't worry, I won't breathe a word about this."

With a wink, she ran off to the bathroom. I just stood there for a moment, my satisfied erection still dribbling semen onto the floor. I didn't bother to clean it up, I just went straight to my room and collapsed on my bed. I had never been so turned on in my life before. How would I ever be able to swim with those two, especially Julia, now that this had happened? I started squeezing my boner, using my own smears of cum to masturbate, though I wasn't trying to have another orgasm. It just felt good to be touching myself there, where Julia had been touching me. I had totally forgot about Hannah, and how we had been touching each other. I just kept thinking about Julia's cute little hand wrapped around my penis, tugging on it gently.

I drifted off to sleep that night, but from then on I would always wake up in the middle of the night, needing to jerk off badly. For the next couple of weeks, my sisters and I never spoke about what happened. Julia had been true to her word, since Hannah didn't say anything about it even though Julia tells her everything. And we didn't stop having late night swims, though our parents had been joining us lately so we were almost never alone in the pool. If we were, then our parents were right inside in the kitchen.

I had a constant boner if my sisters were swimming with me, however. While they wouldn't go out of their way to brush up against me, they were not shy at all about bumping into me or rubbing my dick with their legs. I guess that was all we could do at the moment, until we could all swim alone, without our parents. The anticipation of that happening was fueling my late night masturbation sessions, and I would usually be the last one out of the pool so that my parents wouldn't see my erection. I don't think it would have been a huge deal for them, but I just didn't want to hint that anything was going on. My sisters enjoyed sneaking peaks at it while we toweled off, which I enjoyed as well.

Finally, my chance to take things further came. Our parents were going away for a week, and leaving us to ourselves. When I heard they were leaving, I practically got an erection right then. I just knew that if I was ever going to get to interact sexually with my sisters again, this would be my opportunity. The night they left, Hannah cooked us a nice dinner, and we all ate outside in the enclosed patio. We were all dressed when we went out there, but halfway through the meal Hannah started taking her shirt off.

"Hey, mom and dad are gone," she said, yanking her top off. "Let's go naked as much as we want."

Julia seemed excited to join in, and started peeling her shorts off. "Yeah!"

I just shrugged and took my clothes off too. In a minute, we were all completely naked sitting at the patio table. We resumed eating, but each of us was thinking of anything but the meal. After we finished, Julia stood and stretched a bit, probably just to show off her body, and went to sit by the pool.

"Come sit by me," she called to us, dipping her legs into the cool water.

Hannah was quick to get up and practically run over to her sister. I guess that meant they wanted to be able to look at me while I walked over there. Fortunately, I wasn't totally hard, so it wasn't too embarrassing. They were both staring at me openly though while I walked over to join them. I could have squeezed between them, which they might have been hinting at, but instead I sat a few feet away from them off to the side. I could easily see their tits, which they were not hiding from me at all. I could even see Hannah's neatly shaved crotch, and Julia's almost completely bare mound.

"I guess we have to wait to go swimming, huh?" Julia said. "Otherwise we'll cramp up."

We all just sat there for a few minutes, none of us really saying much. We were all nervous, each of us knowing that something was going to happen beyond what had transpired in the pool weeks ago. I guess they were as shy as me to start anything.

"Fuck it," Hannah said, using language she would never use around our parents, and she hopped into the water.

Julia laughed, and followed her. I just kicked my feet for a bit, watching them float around. They were so sexy, I could have just stroked off watching them swim around casually. I was starting to get hard, and Julia was especially taking notice. Things had been kind of tense between us, since that night. Whenever our eyes met, we both got really nervous and had a hard time talking to each other. I think it must have been just as stressful for her as it was for me. Surely a girl gets frustrated from jerking a guy off and not having anything done to her in return.

Hannah was always the boldest of the two girls. "I think he's getting hard watching us."

My attention was pulled back to reality, and I just laughed, not bothering to hide anything.

"I think you're right," Julia giggled. "Isn't that wrong? A brother getting aroused by his sisters?"

We all laughed, but there was a weird edge to her statement, and when I saw the look in her eyes, even though her face was laughing, I could tell she was thinking about the other night.

"Get a good look, girls," I said, leaning back on my elbows and letting my manhood sprout free. "You'll never see one this big again."

Hannah roared with laughter, but the two of them drifted closer to me to get a better look. There were a few seconds where things were quiet, and very tense. But seeing as how they had seen me this way before, just not so up close and personal, I think it helped the situation. And it was my intent to escalate this to something sexual, after all.

"It is pretty big," Julia said, sheepishly.

Hannah was looking very closely at me, almost studying my penis. When it twitched, they both giggled. She looked up at my face, and the look in her eyes said she was about to do something devious. Before I could move, her hand darted out of the water and she grabbed my dick firmly and pulled. With shouts of laughter, I lunged for her and all three of us tumbled around the water. I felt a childish sense of revenge and tried to wrestle with Hannah, maybe grab some boob or ass, but mostly I just swirled around the water with the two of them. I pretended to chase them, first Hannah but then Julia, and when I would get close enough, or they would let me get close enough, I would grab their legs or arms and pretend to pull them under the water. Once we were under, it was a virtual free-for-all of grabbing and groping. Hannah didn't fight me as I pawed at her tits or squeezed her ass, and her hands were all over my stomach and thighs and everything in between. When her hand would clumsily find my penis, she would squeeze it firmly and hold onto it for dear life while we wrestled. Before I could reach between her legs, Julia would tackle me from behind and climb up my back, dragging me back under the water.