Ballbusting by the pool

It had been a long day at work, and I was looking forward to a late night swim to relax for a while. The staff at the pool all left at 7, meaning the pool would be closed by now, 8:30, leaving me free to swim uninterrupted, provided I could get in. But I knew that the office was locked from the inside and they left the windows open in the summer, so I could easily get into the office, let myself into the pool and be out before anyone noticed. Only this time, I wasn't quite so stealthy.

As I climbed through the office window and unlocked the door, I could hear footsteps coming from the connecting gym, then the door to the pool opened and I saw her for the first time. She was a brunette, shorter than me by about a head, with wide hips, ample breasts and mad bunda. She was wearing very tight white leggings, a pink sports bra and a jacket over the top. She was very beautiful and she froze the second she saw me.

"Shit! Um, hi! I didn't think the pool was open this late." she said, and I could tell she didn't work here, otherwise she would have immediately known I wasn't meant to be here either. "Don't worry, I don't work here. I'm just here for a swim. What about you?" I asked. She sighed in relief and said "Oh thank God, I'm not meant to be here either. I was just going to swim for a bit to cool off. Wanna join me?". Of course, I wasn't about to refuse that offer, so I agreed.

"Great. I'm Rebecca by the way" she smiled and offered me her hand, which I shook. "Adam" I responded. She turned and said "Don't keep me waiting, Adam..." and went into the changing rooms, her ass swaying in her tight pants as I watched her go. I went into the men's room and changed into my tight black swimming trunks that fit snugly over my package, taming my half-mast dick as I did so. Somehow I was still the first to make it out of the changing room - or so I thought.
"Hiyaa!" Rebecca shouted from behind me, and I whirled around in time to receive a palm straight to my balls. "Oof" I grimaced doubling over as she giggled. "Oops, sorry. That was meant for your ass. I didn't expect you to turn." she said, then, smirking, she said "That was payback for staring at my ass earlier."

"What? How did you..." I trailed off as I noticed her swimwear. Jet black bikini top with almost nothing left to the imagination and a red thong. I couldn't even try to stop my erection from sprouting, which she immediately noticed. She raised an eyebrow and smiled. "Hot, right?" she said, before coming close to me, enough that her chest was touching mine, and she whispered in my ear, "Wanna make this interesting?". I nodded. "How about we both remove an article of clothing?" she said, turning around and wiggling her ass so it brushed against my cock. "But I'm already shirtless," I protested, "It wouldn't be fair". She laughed, "That's because you don't have any tits,". I smirked. "Neither do you."

Her foot sailed up between my legs, making connection with both my testicles and continuing until it was stopped by my pelvic bone, subsequently crushing both balls between her foot and my own groin. She left it there for a moment, before returning her leg to the floor as my knees did the same. "I gotta say, you've got balls, Adam" Rebecca smiled. She knelt down in front of me and grabbed my chin, then pointed my head towards her boobs as she undid her straps, meaning her top was completely loose. "Hold it in place." she said, thrusting her chest forward as her tits gave a small bounce. I grabbed her breasts, which kept the bra in place, and in return, Rebecca's hand shot into my trunks and clasped around my balls with little , but enough to let me know to let go. So I took my hands off her tits, only for the top to fall and exposing her melons to me. Rebecca rolled her eyes at me and gave my nuts a sharp squeeze before standing back up, sans bikini top. "Back to the deal. Shall we lose the underwear?"

"Ladies first?" I ask, eyes glued to her chest. "OK then. Boy, I'm about to rock your world" She took my dick in her hand and half-dragged me over to the showers, before turning them (and me) on. The water soaked her hair and dripped down her body. She pulled the waistband of her thong out to moisten her pussy, then turned around to do the sasme to her ass. She bent over, shoving her ass inches from my face, and slowly peeled her thong down her thighs until it was on the floor and her bare buttocks were on display. She turned around again with her hands over her pussy and slid down the wall and spread her legs, still covering, but barely. "Ready?" she whispered. I can barely breathe as I nod. Her hands slid up her chest and there it was. Rebecca's full monty. She got up and flicked her thong into my face, and as I grabbed it she yanked down my underwear in one go, flicking my balls on the way. As she pulled my pants down, my erect cock too was pulled down until it sprang back up and slapped her in the face. She grabbed it and I flinched, but she simply stroked it twice then stood back up. "Shall we play a game?" She asks, to which I responded, "Catch?" before grabbing both her breasts in my hands and fondling them. She laughed and said "I guess you win that game" before she walks forwards, forcing me backwards until I reach the edge of the pool. She gets close and says "We're going to be playing with some dive balls". Then she kneed me in the balls so fucking hard I almost choked on them. My nuts were so tightly pressed between her naked thigh and my crotch that I literally slid off her thigh into the water as my legs go limp.

When I hit the water, the only thing I can hear is her muffled laughter and the sound of air escaping my lungs into the pool. I don't move for a bit, trying to find some peace, then a sudden agony as her hand grabs my crotch and drags me up to the surface. I resurface to see Rebecca, soaking wet and gorgeous in the pool with me, squeezing my gonads. Her body is in the water, and her breasts are just barely submerged, her nipples bobbing in and out of the water. But I couldn't resist her unbelievable beauty, and I kissed her on the lips. Her eyes go wide and she instinctively tightens her already painful grip, but I continue, and she starts to kiss me back. Underwater, I feel her legs wrap around my torso. I grab her ass to support her with one hand and caress her tits with the other. Her body slid down mine until her groin met my penis, and she manoeuvred it into her vagina with a soft moan. She stopped for a moment and punched my balls, kissing me harder as I tried to cry out. Then she slid forwards and backwards on my dick, the water lubricating our bodies as we began to fuck. We continue this way for a while; kissing each other, her squeezing my balls, me groping her boobs, her punching my balls, me grabbing her ass and both of us fucking each other's brains out. We're both about to cum, my balls are on fire but I've never been hornier in my life, and I can tell that she's the same, only without the balls. As we're about to climax she stops kissing me, grabs my head in her free hand, shoves it underwater, squeezes the hardest she's done yet and fucks me until I ejaculate inside her and I can hear the muffled sounds of an intense orgasm through the water. My screams inaudible in the water as we both finish and she takes my cock out of her pussy and released my balls, swimming underwater to kiss them both. I lay back in the pool and closed my eyes, cradling my balls in agony and ecstasy, somehow with both of them still intact. When I finally looked around, Rebecca was nowhere to be seen. I got out of the pool to find her bikini, still wet, along with a nude picture of her which had a message on the reverse. "Hey Adam! That was the best sexual experience I've ever had, and I'm certain it was for you as well. Sorry about your nuts - hopefully they're ok. Here is my swimming costume. Either bring it back next week, or keep it, and I'll find you and I'll take it from you along with your testicles. Look after your balls - they are mine to break. See you soon! - Becca

I smiled to myself and picked up her clothes, bringing them to my face so I could smell her underwear. Then I heard wet slapping on concrete, and I turned to see Rebecca sprinting towards me, still nude as ever, her boobs bouncing around as she ran, hypnotising me with her nipples. She dropped to her knees mid-sprint and slid towards me, pulling back her arm, and when she reached me she punched me so hard in the balls that I screamed in pain, fell to the floor and watched her naked booty swaying away from me as I passed out.