Painful Yoga Session with my Date and Step-Sister

When I started dating Emma, my life had come to perfection. While I had spent most of my teenage years and twenties getting high and drunk and hanging out with people who didn't exactly encourage me to do anything else, I had managed to turn all that around over the last few years. Now, with tender 33 years, I had a well paid job, a nice, large apartment and a life full of exciting people and activities.

Dating Emma was the sweet cherry on top of all that. And sweet she was... Rather small and slim, and usually going easy on the makeup, she was not very noticeable at first. But once you looked at her face, it was hard to take your eyes off her. Her black, silky hair framed a cute face with such wonderful natural beauty. Her slim body's elegance and athleticism was not impaired at the slightest by her perfect C-cup boobs and that wonderfully curved butt.

But what was most striking about her, was how sweet and kind she actually was. Everything about her, the way she spoke and responded, her touchy, open attitude and her constant happy mood left you addicted to her company. It took me two or three dates to realize that this was the girl I wanted to spend my life with. And how insanely lucky I was to get her on a date in the first place.

That was, before I introduced Emma to my brat of a step-sister Amber. With her 21 years, she was exactly the fuck-up, I used to be at that age. I did my best to support her without suppressing her, knowing from myself, just how little she would respond to pressure. But sometimes it was difficult to bring up that patience - especially, last week.

I was on my way home with Emma from yoga class. The whole night, I had been trying desperately not to have a constant hard-on next to her. Clad in a pantyhose and short, black skirt, followed by an elegant, belly-free black top with long sleeves that became wider towards her hands, she was incredibly sexy in a very graceful, distinct way.

Luckily, Emma was always horny after yoga class. I had so far not brought up the courage to ask her, but something about us putting our bodies in all these odd positions, absolutely got her off. In silent gratitude, I just joined her for every class she was up to, and gleefully accepted the treats, she had for me afterwards. Good lord, she was hot.

When we entered the elevator, Emma couldn't hold herself back anymore. With an expression of raging desire, she pushed me against the wall and instantly had her hands on my large package, nicely on display in the tight yoga pants. While one hand playfully grabbed and pushed around my balls under the tight fabric, she slipped her other hand into my pants and underwear to grab my bare, hard cock.

I gasped and let my head bump into mirror behind me while an involuntary shiver took hold of my body. She was so fucking good with her hands - or mouth, for this matter. Demanding, almost forcefully, I slipped one hand under her skirt to grab her butt and pull her against me. The other, I wiggled up her top, until I found her amazing tits. She wasn't even wearing a bra. Her boobs were so perfect and firm, I hadn't even noticed the lack of support in the yoga class.

We stumbled out of the elevator, giggling like teenagers on a first date. While I desperately tried to come up with the coordination required to unlock the apartment door, Emma pressed herself against my back and had both arms slung around me, her palms simultaneously grinding up and down all the way from the back of my testicles to the tip of my cock, on top of the tight pants.

The moment, I opened the door, the hottie grabbed the waistbands of my pants and boxers at the front, lifted them over my groin and placed them behind my balls, making them get pushed out to the front under my happily released boner. Then she cupped my whole package with both hands from either side and continued jerking it.

"Ouuuuhhhhh... yeah babe. Right there..." The way, she was distributing the pressure among my balls and dick was perfect. Just enough to make me feel my balls, without hurting them. We stepped inside and the door fell shut behind us. After wiggling out of my shoes using only my feet, I turned around and went down onto one knee right in front of my girl to open her sneakers and take them off for her.

Of course, I didn't stop there. In absolute bliss, I grabbed her pantyhose and panties with both hands and pulled them down. The short skirt still hid the most interesting parts, but watching the thin fabric peeled off her sexy thighs was amazing. To pull it off her feet, she had to lift them one by one. Every time, she placed the balls of her foot on my bare nuts that were held in place by the pants behind them, and slowly circled her toes up to the tip of my cock. She almost made me cum right there.

"Ohhh fuck! You... bastard!" Emma and I both froze in shock. In raging disappointment, I noticed my step-sister's curses coming from the living room. I had given her the key to my apartment because she had recently moved out of my parents house and lived in a terrible dorm. She was only supposed to use it for studying, but listening closer to the noises that I had been oblivious to a few seconds ago, she was obviously playing video games. "Arghhh... *donkey balls*!"

The exclaim made Emma chuckle softly. I tried to get her pantyhose back onto her legs, but she just placed her foot on the floor and shrugged with a sexy, conspiratorial grin. Dissatisfied, I got back up and squeezed my raging boner back into my yoga pants. Gosh, this sucked. I had told her not to be here tonight!

"Amber?" Emma whispered, as if we were the intruders.

"Yep, let me take care of this quickly." I said in a determination that allowed no second thoughts. For a moment, I thought about waiting until my hard-on was gone, but to be honest, I couldn't even say if it was ever gonna happen without Emma's "help". Instead, I shifted my cock against my left pelvis, held in place there my the tight workout pants. Then I stormed into the living room.

"Amber, please leave. I told you that I have a date tonight." My little step sis laid stretched out on the couch, her feet resting on the couch table in front of her. I had told her so many times, that I hated it. With both hands on my hips, I placed myself right in between her and the massive screen. Emma silently stepped in, her bare legs under the short skirt a wonderful reminder of what was awaiting me after dealing with this brat.

"A date? Lol dude, you can *date* your hand when I finished this." Her comment did nothing but making me proud. Just wait until you see the chick I scored, I thought to myself. Amber was very pretty, too, actually. But in contrast to Emma, she did a terrible job in underlining it with make-up and outfits. I guess "gothic" would be the closest to describe all the leather and steel she was carrying around, but she hated when I said that. Her shoulder-long hair had a different color every two weeks or so, and currently it was green.

"End of discussion. Give me the controller and go home. How did you even find it?" I had tried to hide the controllers in my bedroom, knowing that they were going to distract her from studying. Amber just ignored me and leaned to her right to look past me at the screen. I looked at Emma, a bit embarrassed. She was leaning against the door frame with her arms crossed under her boobs and watched us curiously.

With a sigh, I stepped closer to Amber and made sure that she couldn't glance past me. Then I held my open palm under her nose and gave her an angry stare. Amber grinned at me and held her right hand with the controller up over her head. Since I was standing, I had no issues grabbing it. Like a stubborn kid, Amber just didn't let go of the controller. This was so stupid... With my other hand, I grabbed her wrist and tried to separate the two.

The pain exploding in my balls was so sudden and brutal, I didn't even know what hit me. Tightly held in place by my yoga pants, the distinct package absorbed the full force of Amber's upper cut from hell. There was nothing I could do. My legs gave in and I ended up on my knees with my forehead on the soft carpet. The wave of pain - the first of many - continued building up without mercy.

"Remember this, the next time you dangle your disgusting boner in front of my face." Amber said coldly, before shifting her feet over to use my back as a rest, instead of the table. All I could do in response, was let out a deep, desperate moan. It was not the first time, that Amber had kicked or punched me in the balls, but never when had I been this horny and was about to get laid by dream girl. And never had my dream girl been present to witness it. It was so mean that she always had to go for my sexual organs, especially right now!

Suddenly I noticed a soft, squeaky sound from the other side of the room. It was Emma, giggling. It instantly made me blush in shame. Her finding this funny made the whole situation so much more humiliating. A minute ago, it had been us versus my cock-blocking sister. Now, I felt like the girls had instantly bounded over my male vulnerability.

"Oh, hi there!" I heard Amber say while feeling a shift of weight from her feet on my back, as she probably turned to Emma. A moment later, she joined in with her chuckle.
Emma just went on and on giggling. The pulsing, crippling pain that relentlessly radiated into my stomach from my violated nuts made it sound so unbelievably mean. Suddenly, her happy, positive attitude seemed to have a terrible flaw. Normally, I would have expected that she ran up to and took care of me, the moment I got hurt. Instead, me getting nailed in the balls was an absolute blast for her.

"Did you just punch your brother... in the *balls*?" Something about the way she said the word "balls" made me die from jealousy. She was supposed to talk about my precious pair with me, and not my brat of a sis.

"Yeah, you don't? How long have you been dating?"

"Only like... three weeks?"

"Oh you'll get there. Makes him a lot more easy to handle."

"Nooo..." I moaned into the floor. The girls just continued their giggle.

"Well, I wouldn't want him to... you know..." another chuckle that sounded way too cute broke through, before Emma was able to finish. "... *ill-perform*."

"Haha, don't worry about it." my sis answered while taking her feet off my back, placing them under my shoulders and forcing me onto my back with surprising strength. "See, all is good downtown."

I quickly brought my hands down to cub my aching nuts and hide my relentless boner, but the girls had plenty of time to look at it.

"Oh wow." Emma said in happy surprise. I couldn't believe how comfortable the two were with all of this just a minute into making acquaintance.

Emma walked up to my head and stood right behind me. For a few wonderful seconds, I looked right up her skirt, at the bare, waxed pussy I could be banging right now, had my step-sis not decided to make my life hell again. Then she bent down, grabbed my upper arms and attempted to pull me up. I only got to a sitting position, but the continues ache in my groin left me too weak to stand up.

"Come on, Dave, you have a sweet sister. Be kind to her. I'm sure, she'd love to have dinner with us." Emma knew that I could never reject her with all the exceeding cuteness she had to offer. I grunted reluctantly.

"Ohh, so sweet of you." My sister commented on my ‘confirmation’ with a grin that was cruel, triumphant, mocking... anything but sweet, actually. Suddenly, Emma continued pulling me up again. While I tried to get onto my feet, she pulled on my arms so hard that my hands detached from my aching balls for a moment.

Amber was fast like a snake. The moment, my hands came off, her foot rocketed forward and the top of her toes accurately snapped into my sore nuts. While the kick was by far not as hard as the previous upper cut, it was extra painful that my sweet girlfriend mercilessly held my arms up to prevent me from protecting my manhood.

With a pathetic whine, I slipped out of Emma's grip and ended up in the fetal position in between the two girls, rocking forward and back in a fruitless attempt to ease the pain and humiliation. Of course, they instantly began laughing. It was crazy, how they managed to stir up each other's exaltation.

"Just leave him there, he'll be fine." Amber said casually in between chuckles.

"Sure. Wanna help me with the dinner?" Just like this, Emma left me in my misery and the girls went into the kitchen. Carefully, I lifted my waistband to check the damage. My balls were red and swollen, and hurt at the slightest touch, but for some reason, my cock was still rock hard. Despite all the agony and torture, I was still horny as fuck and counting down the seconds until my fucking step-sis left and I could bang Emma into oblivion. I just hoped, it wouldn't hurt too bad...

The girls chatted and giggled as if they had been best friends for years. I couldn't believe, how well they got along. My low-life thug of a step-sis and that wonderful angel that had descended upon my life, almost a decade older than Amber.

I knew that this was a good thing. Since I was spending a lot of time with my sis lately, it was a nice thing that they liked each other. However, I hated the tone they were chattering in. It was this girlish, excited, secret whisper and chuckle, as if they were on the high school yard and talking about boys.

When Amber came through the kitchen door with plates and cutlery to set up the table, I was just struggling back to my feet, giving her a stare that was intended to kill. She just placed the stuff on the table, turned back to me and grinned.

"So Dave... I heard you're doing yoga now." I blushed instantly. I had kinda pretended for Emma that I had done Yoga previously throughout my life. It was not *really* a lie, just... not exactly the truth, too. I nodded silently. Amber mocked me with a loud, bright laugh. "Man, you're flexible like a virgin's cunt. That must be *so funny* to watch."

"Fuck you, I'm good at it." It wasn't even a lie. With the intensive training over the past weeks, before and in the bedroom, I had really gotten the hang of it.

"Oh yeah? Show me." With that, Amber walked up to me and dropped into the couch with an expecting expression. I knew exactly what she was doing. But I wouldn't allow her to nail me in the balls in some - as she would say - *inviting* position.

"Oh you chicken..." she taunted me as if she had been reading my thoughts. I sighted and looked around the room. If I just did it a few feet away from the couch and never turned my back on her, she wouldn't be able to get to me.

Without saying a word, I walked around the couch, stood in the space between the couch and the kitchen door and took a few deep breaths. It took me a moment to recall the individual steps of the sun salutation. When I thought that I had them together, I began.

Amber laid stretched out on the couch, her head resting on one hand. Surprisingly, she didn't laugh, mock me, or jump up to kick me in the balls. I actually noticed a bit of admiration - or at least thought so.

I got into the downward facing dog with much regained confidence, hands and feet flat on the floor and my body forming a large, upside down "V". I had practiced it a lot, since it had been looking absolutely ridiculous in the first lesson or two. With my head in between my stretched out, tense arms, I looked right through my slightly opened legs at the kitchen door.

Just in that moment, Emma stepped out of the kitchen and into the room with nicely swaying hips. Her hands grabbed the bottom of her skirt on either side and pulled it up to her waist. I was so fascinated by the surprise treat of pussy, I was craving for so badly, that I didn't even realize how she further accelerated her leg in the middle of her step.

Suddenly, I realized my error when her bare foot shot up in between my legs. The moment of realization was almost as painful as the impact itself. With much of my weight on my hands, and my butt high in the air, there was nothing I could do but watch, how her small foot smashed into the nicely presented bulge with a loud *clap*. The full nudity below her waist, that had been such a treat a second ago, suddenly filled me with envy and defeat.

Later, Emma told me that it had been the first time for her to kick a guy in the balls. Unfortunately, it was not going to be the last time. The moment, I screamed out in raging complaint, she let out such a cute and sexy gasp. Before I plunged face first into the carpet, I saw her stand with one hand in front of her mouth in a fruitless attempt to hide her excited smirk. The other still held the skirt up which diagonally exposed just enough of pussy lips to remind me of the fact that it was my dream date who I was still supposed to be fucking *right now*, who had kicked me in the balls so hard that I felt nausea creeping up my stomach.

"Oh, you naughty bitch!" My step-sis playfully commented on the surprise bust. The girls instantly blurted out in laughter again. It was bad. My girlfriend was an amazing kicker. Given her small physique, I sometimes forgot how strong and fast she actually was.

"Sorry, babe." Emma just said as if she had stepped on my toe lightly, before continuing her dinner preparations with a mean snicker. It just didn't make any sense. The fact that all her kindness and sweetness ended all of a sudden, the second she witnessed my step-sis cruelly kicking me in the nuts.

I silently sat through the dinner and tried to ignore the girls. Also, I tried to ignore the relentless ache in my tender testicles, but both was impossible. Somehow, the time passed. All I could think about was the sex, my step-sis had cruelly stolen from me, along with the sweet innocence of my girl when it came to my balls. The shift of power in our young relationship was terrifying.

They said goodbye with a long hug and Emma started cleaning the table, while I brought my step-sis out. Her eyes rested on me the whole time, while she put on her shoes and jacket. Ashamed, I looked down on the floor. Suddenly, Amber jumped at me and gave me a tight hug. I was so sure that I was going to get kneed in the balls, and instantly tensed and bent over.

"Oh easy, bro. Don't worry, you're gonna get it tonight, but not from me." She let go of me and glanced down at my groin suggestively.

"Fuck you. Get lost, already."

"You have a sweet girlfriend there. Enjoy your evening, sweetie." she kissed the palm of her hand and blew it into my direction in a sweet gesture that I knew was nothing but taunting.

"You are a heartless bitch. Go burn in hell." She was still giggling, when I pushed her out and smashed the door shut in front of her nose.

Before I got back to the living room, I felt the heat in my face and knew that I had turned bright red. Being alone with Emma after this evening, felt odd and unpredictable, almost scary. I couldn't really be angry with her. Or shouldn't?

When I stepped into the room, all the anger and uncertainty fell off me in an instant. Fully nude, the hottie stood with one hand on her hip and one leaning against the frame of the kitchen door. Her smile was sweet, warm and inviting, almost innocent. How could I ever be mad at this girl?

"Ready to get back at it?" she hummed in a sexy voice while glancing down at my crotch.

"Fuck yeah." I approached her, my mind spinning. Should I say something? Just before I got to her, I stopped and decided that I had to. How could we just pretend that this didn't happen.

"You know... you are a naughty bitch, for real." I tried to get it across as a joke and not an insult. Her eyes narrowed in a sexy, playful way and she crossed the last two steps between us, instantly grabbing my balls though the tight pants. I grasped and bent over. It really stung, although she was soft with me.

"And... you love that?" Her face was just in front of mine. I had to admit that without the presence of my sister, her dominance and bratty attitude indeed was quite hot.

"I... eh... I don't know..."

"But you wanna fuck me?" Emma wiggled her butt from side to side, her whole body swaying along with such outrageous erotic. I nodded in excitement. Good lord, was I ready to bang her. My throbbing cock was begging for a release and the attention of her hand that was still at my poor balls.

"But then you have to give me, what I want, too." It was this sweet tone again, that I was unable to resist. Her smile and cute voice simply evaporated all resistance that I might have been able to come up with despite her wonderful nudity.

"You want to kick me in the balls?" Saying it out loud made my girl giggle again.

"I will see. I want you to do the *tree*, close your eyes and keep your balance, no matter what." I sighted. Before I was able to react, Emma yanked down my pants and boxers in one go, squatting right in front of my cock that gratefully jumped into the open, bouncing up and down. Emma caught it from the air with her mouth and made me gasp in raging desire. After two of the most wonderful seconds of my life, she let go and said in a seductive tone "The better you do, the more rewarding I will be."

Holy fuck, that girl was convincing. With a deep, trembling breath, I lifted my left leg, fully pulled it out from the elastic pants and placed the foot against my right knee. Then I lifted my hands over my head, laid one palm against the other and closed my eyes. The last thing I saw was the nude Emma, squatting right in front of my very accessible manhood, glancing up at me in excitement.

Doing the tree position with closed eyes was actually quite difficult. Every few seconds, I had to shift my single standing foot a bit or wiggle it in some direction. I felt a soft touch on the bottom of my balls which made me shiver in anticipation and fear. With my left knee pointing outwards, I was completely open for her. Suddenly, her fingers enclosed my nuts and held them in place.

"Steady..." she hissed into my ear, and instantly, I felt a painful tug on my balls when I tipped into some direction. Desperately, I tried to steady myself and end the tug. The sensation of her hard nipples on my chest drove me nuts. I wished, she had taken off my shirt, too. It felt very odd to stand there with my genitals in the open, but still with a shirt on.

"Very good." I heard her sexy voice to my right, just before the grip around my nuts loosened. When I thought that her hand was gone, a sharp pain in my left testicle made me reconsider. And another one, at the right one. It took me a couple of more before I understood, that she was flicking my balls with her fingers.

"Oughhh...." I moaned. It drove me insane, despite not being too hurtful.

"Steady, sweetie. Or wanna go to bed with blue balls?"

"I will anyway, one way or another." The joke made her laugh out again, which felt oddly good.

"True!" Just in that moment, something smashed into the vulnerable back of my testicles, punching them forward and up. The initial *clap* was followed by a second one, when my whole package collided with my lower belly before swinging down, my cock remaining at the horizontal level.

This one hurt again. For a second, I thought that I could impress her by enduring it, but there was no way. The agony took a couple of seconds to build up to unbearable levels, but by this time, I was already tipping over. I fell onto all fours and quickly rolled into a tight ball to avoid a follow-up kick from behind. Unfortunately, my balls ended up behind my closed thighs and Emma honored the offer with a soft, rapid kick.

"Ough babe... my balls..." Once again, she just laughed in such a happy way. I noticed that only mentioning the word ‘balls’ achieved that.

"Next one! The *warrior*, please. But you can look this time." She sounded so joyful and cute.

"Oooohh... I can't take anymore..." I begged into the carpet as the full extent of pain inflicted by the rapid punch and follow-up kick fully unraveled.

"Okay..." she said with a disappointment that almost elicited a tear from me. "So you will forfeit on your reward today?"

I looked up at her, presenting her beautiful, nude body with such overwhelming sensuality. There was no way I was going to miss out on that. Maybe she was bluffing and was gonna let me fuck her anyway. But to be honest, I didn't feel like I had right cards right now to call her bluff.

With trembling knees, I came to a stand and pulled off my shirt. Just when my head was under the fabric, Emma sack-tapped me with a cute squeak. I moaned and bent over. Every touch was pure torture at this point.

The *warrior* was once again - surprise - a position with widely spread legs. By going deep into the knees and spreading out both arms in the same plane as my legs were positioned, the position actually looked quite cool.

Emma didn't even give me a second to find the proper position and balance. With my thighs nearly horizontal, she threw her leg over one, before pulling up the other. Surprised by the sudden addition of weight, I stumbled a step or two and grabbed her butt with both hands, until I balanced us out. She instantly punished me by reaching back under her butt and giving my balls a rough slap.

"Steady!" she commanded in a demanding, dominant tone, I have never heard of her. With all the power I could bring up, I went back into position with her hanging from my body like a backpack on the wrong side. Thank god, she was surprisingly light.
Before I realized, what was happening, Emma lifted her hip and let me enter her. While a wonderful sensation flooded every cell of my body, I realized that I'd have to stay in this position throughout the sex. Emma's hand behind her back, ready to slap my nuts like the rear of a horse, left me without choice.

At least, I didn't have to move. The girl securely did all the work with the elegance of a sexy, little squirrel, one arm wrapped around my shoulders. All I had to do was keep this position, as I had learned. And holy fuck, it was good. Somehow, all the pain in my balls multiplied with the wonderful friction on my cock to a truly wholesome sensation.

In the moment, I felt her pussy tense and her panting increase, Emma suddenly slipped her hand past my cock in her pussy, cupped my nuts and pressed them against the base of my hard cock. It was exactly what I needed. The submissive rush from my balls trapped in the beauty's hand came in hot and made me cum with such powerful force. We moaned and gasped like crazy. My whole body trembled and tickled in the most satisfactory way, I have ever experienced.

When our climax ebbed off, I sunk onto my back with her on top of me. I just couldn't believe how good this had been. Emma looked at me in her sweet, innocent way, as if none of her sudden naughty adventure had happened.

"Thanks, babe." I pressed out, still panting.

"Thank you. Oh and thank your sweet, little sis!"