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."
