Bored Little Girl/Pool1b

You grab a sporty yellow and black two-piece that you had gotten recently. You look at yourself in your tall mirror as you pull the bottoms up tight against your little butt. You like the way this suit makes it look and you take a brief moment to admire your own shape. You also notice your nipples are really hard and you wonder if they'll show through your top. Pulling it on, you're delighted to see the points of your nipples poking proudly through the fabric. You can't resist circling them with your fingers through your top a few times, causing little shivers to run through your body down to your vagina, which was quickly making a wet spot in these bottoms.

It takes some effort to stop stroking your erect nipples, but eventually you manage. Not before a quarter-sized wet patch was visible on the outside of your bathing suit, though. You wonder if your sister will notice it and the thought of her calling out your arousal makes your pussy tingle as you run down the stairs and out the back door to your pool, where Jackie waits for you, one leg up on a deck chair to apply sunscreen. She chose to wear a light yellow bikini with tied sides. The tiny triangle at the back offered a great view of her butt and you could faintly make out the outline of her puffy areolae trough the thin fabric of the top.

You can feel the wetness in your bottoms spreading as you check out your sister, so you quickly make your way into the pool. Luckily Jackie didn't look at you too much, so she didn't notice your wet spot, which was now getting hard to miss. As you walk down the steps into the shallow end of the pool, you enjoy the sensation of the cool water slowly rising up your legs, and you shiver slightly as it reaches your pussy. As soon as you are all the way in the shallow end and have a layer of shimmering water obscuring what you're doing under it, your right hand goes to your pussy and starts stroking the slit and pressing on your lips, speaking your juice around inside your suit as it mixed with the pool water.

Jackie is still paying you little attention as she walks across the deck to the pool shed, retrieving an old boombox to plug her phone into, presumably to play more of her boy bands. Of all the changes that adolescence had brought to your sister in recent years, her appreciation for autotuned teenage boys was your least favorite. Meanwhile, you wade your way along the wall of the pool to the reason you wanted to come out here in the first place; as you pass your aching pussy in front of the flowing return jet, a wave of pleasure washes over you and you let yourself moan, knowing your sister is out of earshot in the shed.

You had discovered masturbating with the pool jets a couple years ago. At first, pointing the jet between your legs was just something you knew felt good, and you did it from time to time whenever you were swimming, but never for more than a second at a time. But as you experimented with it more, you found out how to tease yourself with it and build up pleasure until you reached a wonderful climax. You put that experience to work now, slowly swaying your hips back and forth in front of the jet, letting the flowing water pass over your swollen lips. You close your eyes and want to make yourself cum right away, but the bang of the shed door alerts you that your sister is back out on the deck.

You compose yourself and casually paddle across the pool as your sister grabs her phone and fiddles with the speakers. Your lips are so swollen and sensitive that just paddling your legs is bringing you closer to orgasm, and by the time you reach the other side of the pool you have to stop. You hold onto the wall of the pool as your breathing slows back down, keeping an eye on your sister who starts to dance her way to the pool stairs, having found a song she liked.

Jackie quickly submerges after walking down the stairs, coming up right next to you and surprising you with a splash. You hadn't actually put your head under the water yet, so the water hitting your face was a shock and for a moment you were more focused on splashing your sister back than bringing yourself to orgasm. The moment passes, though, and Jackie begins drifting in lazy laps around the pool. You wish you could just set up in front of a jet and cum at this point, but your sister would definitely notice, so for the moment you just circle the pool like your sister, casually bringing your pussy in front of each jet you pass to inch you closer to orgasm. The slow build is torture. Eventually...

...Jackie climbs out of the pool to recline on a deck chair.

   ...the wait becomes too much and you say fuck it, I'll masturbate with her in the pool.