Sexy Self-Defense Class Escalation

Story idea by u/AccordingPackage5318. Thank you for the inspiration!

As I stepped into the dojo, a warm, excited tickle emerged in my lower belly and radiated into every cell of my body. I had been waiting for this day for months - now, finally, the self defense class started over with a new group. Of course I also enjoyed the late progress of a group that had been training with me for six months. But the first day to *break in* the newcomers was always special. At first glance, I counted three women and five men. It was perfect! There even was a small supply of guys left for me to demonstrate the techniques on.

Slowly, I walked across the mats to drop my sports bag at the opposite end. With my 23 years, less than 5 feet 5 inches and about 115 lbs that mostly were ass and tits, I was not the self-defense instructor that most of my students expected. At this point, none of them knew that I actually was the instructor. It was a good time to investigate what some of my students were like.

Two hulking dudes in their mid twenties stood right in the center of the mats, hands in their armpits to accentuate their biceps. They stood at least 6 foot apart while talking. I knew their game. They had to be the center of the room, and take up as much space as possible. My path led me right in between them.

"... was such a noodle. I watched him on the bench press when he tried to... Oh. Look! Barbie is participating today, too." Both of them let out a stupid laugh. I turned to the guy on the left who was talking and stepped so close that my tits nearly touched his forearms, staring up into his eyes. With his neat, shortly trimmed black hair and dark eyes, he was actually not that bad looking.

"What was that?" I asked, relaxed.

"I'm just worried about you, darling. Why don't you go take a shower now and get ready to have a drink with me, after I nailed this course?" He flexed his arms and grinned down on me in confidence. My brain instantly began generating images of us down on the mats, learning and teaching important life-lessons about *someone's* natural limitations. I took a deep, trembling breath to ease off my mind, selling it as a sigh.

"Actually, why don't you ask me again in an hour?" I said in a rather inviting tone. A good instructor always had some motivating words for their students. "Until then, you've got plenty to worry about."

Demonstratively, I let my eyes wander down his white tank top to his red training shorts, and back up from there. The dude was clearly wearing a cup. I could tell from the looks of his bulge - and from his straight, opened position despite a girl standing almost in between his legs during a self defense class. Either he felt very safe, or he had never been taught that lesson. The excited tickle increased, I even got a bit wet. Today was going to be good!

Impatiently, I strode to the bench at the wall, dropped my bag there and quickly made sure that my outfit sat in position. It was uniformly black and no more than a skin-tight shorts and a just as tight, belly-free tank top that barely covered more than a sports bra.

Using both hands, I gave each of my boobs a push from below while lifting the elastic fabric and letting it audibly flick back to keep them in place. These tits could get in the way during a fight just as easily as a guy's package. But much in contrast, it didn't mean instant defeat for me, if they took a hit or squeeze. Finally, I tied my long, blonde hair into a ponytail. When I was all set, I forced myself to stop my elevated smile and whirled around and away from the wall.

"Alright, ladies and gentlemen, would you please make a circle?" I stepped back into the center of the mat, right next to my tall, muscular friend and laid my index finger on his chest. "You stay right here. What's your name?"

"Tom." he shortly replied, his confident smirk still waiting to be wiped off his handsome face.

I enjoyed the confusion, as the participants gathered around the smallest and possibly youngest person present. Quickly, I put together a few sentences. My introduction was never prepared, I always tailored it to the course and participants.

"Good afternoon everyone, I'm Amy." I wrapped up the formal part. Today, I wasn't up for any more tedious speech. "Tom here thinks that someone like me shouldn't be in this course. And that he is going to *nail it*. Isn't that right, Tom?"

"Ummm..."

"A lot of girls would probably be intimidated by someone like him. In this course, you will learn that there is no reason for that. Why don't you attack me, Tom? If you manage to pin me down, I'll go on whatever date you desire."

The grin that had disappeared for a moment after I had called him out, quickly returned in an even larger extent. After reassuring himself with a quick look to his buddy, he threatfully lowered his arms next to his body and approached me a bit hesitantly in a wide stance. I simply stood and waited with my hands on my hips.

I loved this moment so much. A heavy, muscular guy approaching me, confident that he will have no problem whatsoever to do with me as he wanted. Convinced that I was fearfully intimidated facing a creature nearly twice my mass. It was actually a rare sight for me. Much likely, this level of confidence was going to be the first and last time to be observed in a male in this group.

The cup he was wearing was an obstacle. But none that I wouldn't be able to deal with. If you think about it, having a hard, unyielding piece of plastic somewhere around your groin, was actually a dangerous thing in a combat where clothes and bodies got twisted, pulled and distorted. The thing only worked, if it was *exactly* where it belonged.

Lifting both arms over his head like a gorilla, Tom suddenly charged me, basically attempting to throw himself on top of me. In a split second, I made the decision to go forward, not back. With a rapid feint to my right, I ensured that he placed his left foot down far to the side, widely opening his legs. Then, I threw myself down and dove right through his knees. As expected, Tom made the wrong decision to bend over to try and grab me through his legs.

When I came up behind him, I swiftly slipped my hand up into his groin, grabbed and lifted the hard plastic cup and yanked it forward. The suppressed *oumpf* when I let it snap back told me that all was set. While retreating my hand, I still made sure that his balls were sticking half out of the narrow back of the cup, just before where the elastic bands held it in place. It was worthwhile to get a good feel. He had a massive pair, and the thin, loose cotton shorts did nothing to obstruct the sensation.

The moment, Tom began straightening up and attempting to whirl around, I gave him a light kick into the back of the knee and quickly placed my knee right under him, the foot securely on the mat. I could've just rammed it up right away, but I wanted to make this one look like an *accident*.

Tom's heavy body crushed down onto my knee in lack of support of his own. Still half-bent over, his nuts perfectly landed on the hard, flat lower end of my thigh. I could feel the narrow, hard plastic piece digging into his large, elastic orbs that desperately tried to escape to either side. Maybe, I had started off a bit to cruelly...

The poor dude let out a grunt that I wouldn't even associate with a human. Mounted on my knee, his body turned limp and he fell face first onto the mat. Frozen in my stance, I took a moment to focus, breathe and ease off. The rush that I felt from watching and *feeling* the huge guy's defeat was a lot too sexual, this early in the lesson.

The room around me was dead quiet besides Tom's groans. Only two girls that looked like students from the local college let out some faint squeaks, as they tried very hard not to giggle, each one pressing her hand against her mouth. Another woman in her late twenties threw a very suggestive, shocked glance at a guy of the same age next to her. He noticed her stare and looked away. They stroke me as a couple. It was perfect.

"Tom, are you wearing a protective cup?" I asked after a long, awkward silence and stood straight. All I got, was an indistinct grunt. "Okay, guys, I'd like you to take these things off. You see, what can happen. Testicles are made in a way that they can take a hit from a foot or fist, but being squeezed around in some hard plastic that may get out of place, is a whole different story."

I pointed at poor Tom who continued gasping and rolling from one side to the other, one hand lifting the cup from outside his pants while the other clutched his balls within. Then, I looked around the other participants and continued:

"Besides, this is not one of these martial art courses where we are fighting with a strict set of rules, and the only hit in the groin you might take is an accident or rule violation. This is self defense. If you are not wearing a cup every day, why would you learn to defend yourself wearing one? Protecting your weak spot and enduring a hit if you fail to do so, is the most valuable lesson that you can be taught here."

From their faces, I could tell that my speech had made an impression. However, none of them got up to remove their cups. It always took one to start.

"Get up, everyone." I commanded. Everyone stood up. I slowly strode along the inner circle, very close to the participants. The first guy looked like a college student, too, actually nearly a bit too nerdy for a class like this. When I came close, I could sense his fear. With every step, he seemed to bend over just slightly more, his hands awkwardly moving towards his groin. He was clearly not wearing a cup.

The second guy was around 30, wearing a tights that displayed his package like bike pants two sizes too small. Very obviously, no cup. Very nice to look at, though. Then I got to the couple. From the woman, I got a smile that was very telling. She knew that he was wearing a cup and she wanted me to know. I stopped in front of him, turned and looked up, just a bit uncomfortably close.

"Hi. What's your name?" I said with a devious smile. I really had to stop enjoying this so much.

"Uhh.. Daniel."

"Are you sure that you are not wearing a cup, Daniel?"

"Ummm... I think... I think I do."

"Oh, you *think* so, eh?" I glanced over my shoulder where the victim of my demonstration had found some comfort in the fetal position.

"I, ehhh... I will go take it off."

"Very good." I smiled.

He nearly stumbled and fell when he turned around and hurried to the changing room. Tom's buddy quickly followed him, and after a minute or so, Tom struggled to his feet and limped out as well. I wondered if he was even going to come back. Then, for just a moment, I saw his boner that he carefully tried to hide between his hands and the cup that he had to hold up. What a nice surprise!

Just a few minutes into the course, I had adjusted the attitude of the participants just as I needed it. A while ago, I had been the little, pretty barbie for them, that couldn't possibly be an instructor for self defense. Now, the guys feared me, and the women envied me for my power and control. Especially Daniel's girl smiled at me in full sympathy.

"Hi, and you are...?"

"Sally! Nice to meet you, Amy."

"Are you Daniel's girlfr..."

"Wife! We just got married." She lifted her hand that did *not* show a ring, since she had to take it off for the class.

"Nice, congratulations. Would you like to fight Daniel next?"

"Sure!" she exclaimed so fast, it seemed like she had just been waiting for this. "But... I don't know anything about self defense."

"Don't worry. I just want you to learn one lesson today: trust your instincts." I pulled her into the circle and positioned her for a fight. In contrast to my demonstration with Tom, I further handed her a pair of light boxing gloves that left the fingers free for grabbing, and a pair of padding for her feet. When she was all set, I continued my lesson that was anyway not relevant for the guys in the dressing room.

"When Daniel is coming back from there, I would like you to imagine him fully naked. You can do that, right?"

"Ohh... of course." Sally grinned as her face turned red. The two students behind me giggled again, making Sally join in and relax a bit.

"That is all. Just imagine him fully in the nude when he is coming here and facing you. And then, simply trust your instincts."

This always worked to get a girl to focus on the most effective target. Seriously, if you looked at a nude guy. Let him be tall and ripped with muscles. There was always this little, pretty spot in between his legs, jumping into attention of every female. How could this *not* be the prime target for any girl?

I finished talking just in time when Daniel, Tom and his buddy hesitantly entered the dojo again. Sally intensively stared at her husband while biting her lower lip. She was so susceptible to the idea and whole situation, there clearly was some suppressed desire to treat her husband a lot different than usually.

After explaining the husband what was up, and providing him with padding, the two faced each other. Sally still had not put off that wild, demanding stare. Her eyes repeatedly darted down to his groin and back to his face. Daniel looked a bit confused when she approached him.

"Oh babe, where is this energy comi... ggghhhhaaaaahhh..." he grasped when his wife instantly greeted him with a snap kick in his now unprotected balls. The padding on the top of her foot made a loud, humiliating *clap* echo through the room. I could tell that she had wanted to just slightly tap his nuts, but it was clear that she had no idea, *how* sensitive her husband's testicles actually were.

Before he even got to fall onto his knees, she was clinging on to him, dragging him down. Just before they hit the mats together, I watched her hand secretly slip into the trouser leg of his loose shorts, seizing her bare victory for good.

"Ohhhh...! Aaahhhhh... Honey, what are you... ahhhh... please let go..."

"If you want to surrender, tap out." I said, the involuntary arousal making my voice a bit unsteady. This group was escalating beautifully. After a few seconds of fruitless attempts to get his wife's punishing hand out of his pants, Daniel tapped out and instantly rolled onto his stomach, hiding his face.

"Very nice!" I complimented Sally who got up with the most satisfied, elated smile I could imagine on her. Her hand unsteadily darted to her crotch, then her tits, but halted every time when she became aware of *what* her body was craving for.

"Return match?" she smiled down at her husband.

"Ohhhh... fuck, no. You squeezed my fucking balls, babe. Ouuughhh..." 

The two female students continued giggling, trying less and less to hide their amusement. It was about time to pair them up and give them something to do. Ignoring Daniel's complaints, I clapped my hands and continued with the course.

"Alright, wonderful! I think you all can see that strength and size alone does not win you a fight. For today, we will continue just giving you an impression of what you and your bodies are capable of. From next week on, we will focus a lot more on actual techniques. Now please pair up, and do some light contact fighting. Just follow your instincts and try out what you can do and what is effective."

While the two girls instantly looked around for another partner and Sally went down on one knee to comfort her husband, Tom and his buddy, as well as the two remaining guys instantly paired up. I quickly walked in between the two large, hulking dudes and assigned each to one of the girls. Their reluctance was obvious, but none of them dared to oppose me. When everyone was set and got their protective gear, I walked to the slim, nerdy student and the older guy in his revealing tights.

"You will fight me together. Think about how you can work effectively as a team." They looked at me like deer in a spotlight. I fucking loved how scared men became of my small, mean, sexy body once they had seen me in action.

I had specifically chosen the older guy because of his tights. Kicking him in the balls was so tempting with this cute little cushion of male pride and weakness at such perfect display. I couldn't wait to feel it against my bare foot - I was the only one who only wore the gloves. Unfortunately, the dude was a complete disappointment.

The slim student approached me first, carefully keeping his hip as far behind as possible while holding one arm down to block potential kicks. I jumped him and locked his neck under my arm, waiting for an opening. Suddenly, the other guy was behind me and threw his arms around my body. For a second, he grabbed both of my tits, before sliding down to lift me up into the air.

Unfortunately, I had already launched up my foot up where I expected his sexy bulge to be behind my butt. All I wanted to do, was slap the soles of my toes against it from below, in order to have him start the fight with some minor ball-ache and a reminder of what his lesson was about.

Since he was quickly dropping to wrap his arms around my hips, my hard heel was instead buried in his package with decent momentum. It felt just as wonderful as I had anticipated and made me elicit a soft, involuntary moan. The guy let out a funny gulp, and sunk down behind me, his arms touching every bit of my body on the way down, before retreating to cup his bruised manhood.

In the same moment, I felt the student's hands on my thighs, attempting to push me away and wind out of my hold. Without making contact with the floor, I swung the same foot forward that I had used to bust the guy behind me. This time, I made sure not to kick hard enough to fully defeat my last remaining opponent.

The distinct feeling of his balls slapping against the top of my bare toes gave me another involuntary, hot shiver. Every course I gave was a challenge in restraint. After just a handful of ball-kicks or squeezes, I always ended up desperately horny.

To my surprise, the guy took it rather well. His knees seemed to give in for a short moment, and he let out a cut-off cry. But then he nearly instantly steadied himself and pushed forward. The moment of distraction from the sexual uprising in my lower body was enough for him. I tripped over the man who cradled his balls right behind my feet and fell onto my back - the nerd with shoulder-long curly hair on top of me.

He instantly tried to get up onto my shoulders to secure my arms and pin me down. When his groin was right above my knee, I pulled in my leg and thrust my knee up, awkwardly mounting him on top of it. Moaning and trembling, he managed to push himself off and straddled my stomach while attempting to grab my arms.

Fortunately for me, he sat down just onto my right hand. After I had watched in envy as Sally grabbed her husband's bare balls, I finally got the chance for a proper feel, too. Effortlessly, I slipped my hand along his inner thigh into his shorts, barely encountering his loose boxers. With primal fear and panic in his eyes, he attempted to jump up and away, but it was too late. My fingers instantly found his bare, low-hanging balls and secured them. They were of decent size, although smaller than Tom's for sure.

The rush of power was amazing. All the struggle and fighting ended right there when I got him by the balls. His determined, focused expression melted down to pure submission, as he silently begged for mercy. I was soaking wet at this point. The kicking had been arousing, but fighting on the ground was only a tiny step away from actual sex for me.

I pulled up my left knee to the side, placed my foot against his knee and kicked it down so that he rolled over onto his back next to me. Without letting go of his meaty, sensitive orbs, I leaned onto him from the side like a loving wife and looked deep into his eyes. His cock stiffened and wind out from under my wrist. Good lord, I could've fucked him right there, was I not currently teaching a class.

"Ohhh, you pig!" I heard the smaller, blonde student yell who was fighting with Tom. When I looked up, I just watched her step away from him and his massive boner, their hands locked on either side. The girl made me proud with an absolute crushing kick into his groin. I almost felt bad for him. My demonstration must have left his boys quite sore, and the girl that kicked him was *really* pissed.

In an absolute pathetic attempt, he tried to jump up a bit to reduce the relative speed at impact, only to open himself up even more. There it was again, the loud clap of the padding on a girl's foot against a guy's unprotected genitals. Every man in the room had now learned what it felt like.

In a mix of pity and overflowing arousal, I watched Tom go down again. This time, he wouldn't get up for a while. I gave the pair of balls in my right hand a last squeeze to remember, got up and clapped my hands. If I watched another ball-bust, or got to deal one myself, I was going to orgasm in the middle of everyone. I really had to get off the edge a bit for now.

After all the guys except from Tom had managed to get upright again, I set up a small circuit training for the last 20 minutes or so. It had just been too much fighting for me. I instantly noticed the chemistry that suddenly was between Sally and her husband Daniel. They were going to have an interesting night, I was sure.

As soon as I had everyone working out, I went to the restroom to wash my face with cold water. Even tho I had barely moved, I was short of breath. My nipples and pussy craved for attention in an almost painful way. Suddenly, the date with Tom didn't seem such a bad idea. There was nothing better than going on a date with a guy while he was trying to cope with his aching nuts. Especially, if it was me who had given him the ache.

The remaining course passed in the flight. Only one time, I couldn't resist giving the guy in his thirties with the hot tights, Micha, a sack-tap from behind, after he repeatedly refused to crotch down far enough while doing squads. It instantly took me back into horny land. No matter what I tried to focus on, I couldn't tame my fantasies. Especially with sexy Tom clutching his tormented balls, much in contrast to douche Tom I had encountered earlier.

"Okay everyone, see you next week." I quickly dismissed the class and sent everyone out. Before Tom was able to get up onto his feet, I sat down right in front of him with crossed legs and smiled down at him.

"Hi Tom, did you like my class today? Looks like you didn't participate that eagerly." There was no strength in him left to oppose my taunting. I continued raising the bets in a complaining tone: "I would love to go on that date with you, but think you still have to deserve me."

"Oh please... I cannot fight you."

"That's a pity. Didn't you say you would nail this thing?"

"Fuck, I don't know. You girls are so unfair, going for the balls all the time. And I don't know why it gets me so fucking off."

I burst out in laughter at the surprising confession. He actually had made me speechless this time. I loved where this was going.

"If you practice your resistance to ball-ache, you will both get better in self-defense *and* be able to put up with naughty brats like me." I purred and demonstratively arranged my boobs in the tight top. Not because it was necessary, but because it made for an amazing show.

"How can I... practice it, when it hurts so fucking bad..." he complained.

"You just need the right motivation." I jumped back up, placed myself in his view in the most sexy pose I could muster and winked down at him. "If you manage to take all my clothes off, I will give you a date you'll never forget. You can take as long as you want, just gotta get them off somehow."

Given the fact that there were only three tiny pieces of clothes on me, of which two could easily be pulled down together, it was not even a difficult task. In addition, I didn't even want to give him a hard time anymore, desperate as I was at this point to get laid.

Tom looked at me in awe, his eyes wandering down my well-trained body. When he began pushing himself up, I quickly strode over to the entry and locked the door from the inside to avoid any unexpected visitors.

When I hovered back on a soft cloud of deep sexual anticipation, Tom faced away from me, just straightening his legs with his hands on the floor for support. Without warning, I walked up to him, yanked down both his shorts and underwear and sent a light kick up in between his legs. His balls bounced up and his hard cock slapped against his belly a split second after the impact of my foot.

It was too soft a kick to take him down, but he moaned and stumbled forward, nearly tripping over the shorts around his angles, before managing to step out of them. When he turned around, nude below his tank top, I was reminded of what I had said to Sally at the beginning. His groin was neatly shaven, making it look even more vulnerable as usually. The contrast of his hulking figure with the massive hard-on, and that cute dangling weak spot was gorgeous. It naturally captured all my attention in the upcoming fight.

Tom knew that his only chance was to get it over quickly. Without even trying to defend himself, he charged me, his cock swinging from side to side. When he got to me, he roughly grabbed my tight top at both sides and forcefully yanked it over my head. I bent down, grabbed his bare hips and rammed my knee into his balls as softly as possible in my ecstatic state.

It was enough to take him down, but not enough to make him let go my top. I allowed him to pull it off over my head and arms, and let him have a good look at my bare tits. Before he got to enjoy it too much, I yanked his top up, too, but not off. For a wonderful moment, he was on his knees in front of me, his head and arms stuck in the top that obstructed his view. Giggling naughtily, I delivered a rapid kick to his exposed balls.

Back he was on the floor, in front of my feet, struggling to get his top back down and his hands to protect his massive genitals. I was torn. Although I *really* needed to get laid, this was too much fun to not enjoy every second of it.

He recovered much faster as I expected. Out of nowhere, he tackled me and I landed on my back, feeling my tights and underwear instantly pulled down a couple of inches. I quickly threw my legs around his torso and locked my feet behind his back, before he was able to strip me all the way.

Tom instantly tried to get further down, probably in order to pleasure me with his tongue. I would've come instantly - and lost control. I couldn't let it happen, as much as I was craving for it. In addition to my legs around his torso, I swung my arms around his head and smothered him in my bare tits.

The moment of victory was short lived. Rendered helpless on my back like a turtle, I felt his hand slide up my inner left thigh, and his fingers wiggle into my shorts and panties just as I had gone for the other guy's balls. When his fingertips tickled my center of pleasure, I instantly let out a bright scream. He was actually very skilled.

It only took a couple of seconds, before the orgasm began building up like a freak wave. It crashed onto me and dragged me down into a realm of pure pleasure and delight. Absent-minded, I let go of him with my arms and legs and immediately felt my shorts and panties being yanked down. When I noticed that he ended up upright on his knees right in front of my feet, I made sure to give him a last, and lasting kick in the balls.

We both ended up next to each other on the mat, moaning and panting, although for very different reasons. Suddenly being stripped fully nude somehow made the whole experience even more amazing. After all the dominant games I had played with him, it was nice that he had gotten something out of it, too.

It took me quite a while to get myself back together. The orgasm had been as deeply satisfying as it was long. I couldn't help but feel super attracted to the guy that I had judged as absolute douche at the beginning.

Like a hungry lioness, I pushed myself to all fours and approached him. He was still in fetal position, slowly rocking forward and back with a pain-distorted face. Lost in the orgasm, I had given him quite a mean kick at last.

Almost effortlessly, I rolled him onto his back, pulled his hands away from his blue balls and went onto my knees in between his legs. For a moment, he looked at me in panic mode, weakly attempting to roll over. I quickly bent over, softly took his meaty, tender balls into both hands and sucked his rock-hard cock.

He was as close to the edge as I had been. I couldn't even get halfway through my routine of teasing and sucking his balls before he came. I made sure to swallow all, as I didn't want to clean up the mats. When his orgasm finished, Tom laid there as if he was paralyzed. His eyes were closed and his mouth opened, gasping in shallow breaths. Damn, I had really given it to him today.

Happy and very excited for the rest of the night, I jumped up and gave his balls another very light kick. Unable to move, all he did was stare up at me in desperation.

"Oh babe... please, no more..."

"Then get into the shower! You still owe me that date!"