A loud slap echoed through the door. A feminine voice gasped in surprise.

"This voice... It must be your wife, right Mark?" The man next to me smiled.

I started to consider that maybe this was all a bad idea.

...

Helen, my wife, and I, regularly engaged in all kinds of sexfights and other sexual contests. Between us, but also with other members of our community. Whatever the rules, the losers had to respect the conditions, usually obey and serve the winners, often in a humiliating way.

We gathered quite a reputation among our group, being both ruthless and quite successful.

This time, we were facing a new couple: Charles and Stacy. They were rich owners who just moved in, and we were well determined to let them know who we were and how things work around here.

The rules were a bit specific: The wives have a sexfight in a separate room while the husbands wait just outside. They can only guess what's happening with the muffled sounds going through the door. The first woman who reaches an orgasm loses and submits to the winner. She can then open the door and reveal to the husbands who lost and won. The losing couple has to obey the winners for the rest of the day and the losing wife will be kept for a few days.

We went to their house. It was huge and richly decorated with classical tastes.

Charles was blonde, rather tall and slim. Compared to him, I was shorter but bulkier, with short dark hair. My wife, Helen, was the same size as me, with dark hair tied in a long ponytail. Stacy was shorter and thinner than her with blonde short hair.

While we met, they always had that little smile which was quite annoying. Like they felt superior to us, which made me want to put them to their place that much harder.

Helen felt my frustration. She looked at me with a very subtle smile telling me non-verbally that she saw that too and she was going to make them regret that haughty attitude.

After a little drink, they led us to the door to their bedroom and the wives began to strip.

Helen commenced the hostilities:

"I'm going to turn this bitch into our obedient slut Mark," my wife taunted, smirking while removing her pants.

"Continue to talk," replied Stacy. "It will only make it more embarrassing when you'll beg us to stop." She smiled while dropping her dress.

"Oh Mark" Helen said, rubbing my bulge, "I hope you have a good load prepared to shut her mouth once she learns her place." She said, looking at her.

They were now both in underwear. My wife had a sexy black set with multiple straps around the waist, thighs and around her chest, barely hiding her most intimate parts.

Stacy was wearing a white and intricate lace set with stockings held by a garterbelt.

Tension rose in an instant as silence settled in. Both were looking at each other with ferocity and excitement.

Stacy then opened the door to their bedroom:

"Losers first!" She said, inviting my wife to enter.

Helen grabbed Stacy's arm and threw her into the room.

"Ah!!" She gasped.

Helen entered and turned to me:

"It won't be long," she said while winking at me, and closed the door.

Charles and I were left alone in the large corridor. We could hear their voices through the door but not understand what they said nor who was talking.

"There's all kinds of toys and equipment in this room" said Charles, "and I know exactly which one I'm going to use on you once Stacy's done with Helen."

"Oh and which one?" I replied.

"For example I just bought this anal hook which doubles as a cock ring and I would love to make you the first user."

"Well I know what to use on you when Helen wins then!" I laughed.

Charles smiled and we both sat on chairs, trying to listen to what was happening on the other side of that door, grasping any hint we could get.

First, we heard them talk. We couldn't decipher what they were saying. Then, silence. After a couple of minutes, I stood up and went closer to the door, nothing forbade that. I slowly placed my ear against the door.

At that precise moment, we heard a loud gasp. It felt like the one who did this was surprised by her opponent who either hit a sensitive spot or suddenly acted dominantly.

The noise surprised me and made me move away from the door. At the same time, I couldn't control my surging erection which was now fully visible through my pants.

When I moved back to my place, Charles noticed it and smiled:

"It only began and you're already ready to burst." He laughed. "Difficult to believe you're supposed to be a tough couple."

He put his hands on his crotch and released his half-erect but already huge dick, and started masturbating slowly, visibly aroused by the sounds behind the door.

'I've always been on the eager side, but don't worry this didn't stop me from taming people tougher than you, quite the opposite actually."

I sat down and started to touch myself too.

It was impossible to know which voice was from who, with the sound deformation and their voice tones being close to each other to begin with.

It seems like the woman who gasped was in a difficult position. The gasps multiplied, intensified and turned to moans. The interval between each sound shortened. It must have been Stacy. My wife is known for being rough and relentless. Seeing someone being dominated that fast must have been her doing.

"Poor Stacy." I said. "In all honesty, on one-on-one she had better chances against me than against my beast of a wife." I laughed.

I saw the frustration in Charles' face, who replied nothing. Even he was starting to doubt his own wife, which was delicious to me. I couldn't hide my huge smile.

We heard them walk away, followed by a big "SLAM!". After that, we heard furniture squeaks in rhythm.

"God, she's breaking your wife and your bed! Shouldn't be too hard to replace the bed at least." I said.

I was feasting. Charles, on his side, was fuming. His head visibly turned red, but he didn't stop masturbating nonetheless. The slut was loving it.

The intensity of the rhythm intensified even more. We heard one of them, probably the dominant one, scream on the other one. Then came a slap followed by a weak moan. Then another series of slaps followed by a series of moans, all the while we heard furniture slams against the wall with relentless rage.

It wasn't a sexfight, it was an execution. Someone will leave this place forever changed.

Once again, silence. We heard subtle whimpers. Then steps. Rapidly approaching, like they were coming at us!

SLAM!!!

We saw the door bang and bounce against the shock. At the same time, we heard a very distinct and loud gasp.

The shadows below the door darkened. Wet sounds could be heard in rhythm, followed by increasingly loud and deep moans.

There were still knocks against the door, as if the person was trying, in vain, to fight back against that relentless assault.

Charles and I were now stroking super fast. This was happening just in front of us and yet, we didn't know who was dominating who. But something was sure, this fight wasn't a close one. Someone was losing hard.

The noises were at full speed now. The wet sounds, the banging, the whimpers. The pressure was unbearable. It was so hot in this room I could have passed out.

We felt a loud single bang:

"Biiiiiiitch!!!" We heard.

It was a loud and desperate agonizing cry. The only word we were able to fully grasp since the beginning.

And then, complete silence. The banging stopped, the wet sounds stopped.

We guessed heavy breaths, and then, we saw a liquid flow from below the door, from their room to ours.

It was the sign of defeat. The juices of the loser running to us as a final show of submission. The winner knew what she was doing and must have felt so satisfied.

It was too much.

Charles came and sprayed its semen over the juice on the floor and I quickly followed.

We fell back, heavily breathing.

But the door didn't open.

For what seemed like an eternity, we heard nothing but noises and residual muffled voices. It was really hard to understand what was going on on the other side.

After a while, silence settled, and the door finally opened.

The person opening the door was hiding behind it. So the only thing we saw was the interior of the room being slowly revealed to us.

The room was a total mess. Furniture was all over the place, with sheets torn apart and stained with fluids which visibly sprayed all over them.

In front of us, at the back of their room, was a bed. On that bed stood someone totally naked. Her arms were in the air, tied to a chain on the ceiling. Her legs were spread apart. Each knee tied to a chain linked to a side of the bed. Her pussy was laid bare before us. It was stuffed with what seemed like a huge dildo while I spotted an anal plug between her cheeks. Wax was sprinkled all over her body, and degrading markings were written on her inner thighs and torso, calling her a "defeated bitch" and a "cheap slut". Her eyes were covered by a blindfold and her mouth gagged. She was convulsing and subtle tears flowed through the blindfold.

I had trouble identifying who it was from that distance, but as soon as I saw those dark hairs I knew what had happened.

With horror, I realised that Helen had lost while Stacy appeared from behind the door with a huge devilish smile.

I fell to my knees, in disbelief of what had happened. How could a champion like Helen lose to a newbie like her?

I heard Charles laugh from behind me:

"Looks like you were all talk after all!"

"I didn't think it would be that easy." Stacy replied. "The slut gave up so fast I thought she was trying to trick me at first."

"The level in the area must be way lower than what we were accustomed to, I'm afraid." Charles continued, faking sadness.

He walked up to her and they kissed passionately.

Stacy then crouched in front of me and said:

"Wanna see your pitiful slut of a wife from up close?"

Without waiting for my answer, she grabbed me by the hair and pulled me into the room.

She pushed my head very close to Helen's pussy. She was so sensitive, her whole body was convulsing, probably in reaction to everything she went through. The dildo was vibrating deep inside her.

When she heard me entering the room she whined in protest through the gag, but Stacy slapped her:

"I don't wanna hear you without me asking, pet!" She yelled. "This body belongs to me, not to you, not anymore."

Helen breathed heavily but stayed silent.

Charles pressed my head against Helen's thigh.

"Look how close she is."

He caressed the area around her vulva with his nails and Helen convulsed in response. With his other hand, he pressed the dildo deep then removed it entirely while pinching her clit.

Helen screamed as a spray of her juices splashed on my face.

Stacy pushed me back, and positioned her crotch above me.

"Lick me now."

And so I licked the woman who beat mine. Asserting her superiority over us.

Charles started to fuck Helen while I was servicing Stacy. I heard Helen moan but couldn't see what was happening.

Stacy pulled my hair heavily as she rammed her cunt into my face.

"Fuck, beating supposed strong sexfighters into submission feels the best." She lowly growled.

Soon after, she climaxed, mixing her juices with Helen's on my face.

On my knees, she put her foot on my erect cock, pinning it against the ground, and started making backs and forths.

"Do you like your true place?" She asked.

I instinctively nodded, as if something arose within me.

I now saw Charles fucking Helen on the bed:

"You're my fucking cocksleeve now, understand?!" He yelled.

He removed Helen's gag.

"Tell me, tell me what you are and I might let you cum."

Helen gritted her teeth and said nothing in protest.

"Fine, let's see how long you can keep it up!"

For the next 10 mins, he fucked her mercilessly and brutally. Helen was reaching her limit, as was I.

"I'm- I'm your cocksleeve, I'm inferior to your wife, please, please make me cum! I can't bear it anymore!" She finally conceded.

"Good," Charles replied.

Both Charles and Stacy hastened as Helen and I were reaching our orgasms.

But they suddenly stopped.

Charles pulled out as Helen grunted in frustration.

"But, bu-"

"Shut up!" Stacy interrupted.

Charles came to me, stroking:

"How does it feel, knowing you weren't able to make her feel that good?" He taunted.

"Here's a little souvenir to masturbate to." He continued.

He then groaned and came, spraying a huge quantity of semen all over my dick.

My cock was throbbing, on the verge of orgasm.

Stacy detached Helen and pulled her by the hair, making her crawl up to my legs.

"Suck it clean bitch!" She ordered.

Helen instinctively obeyed.

While looking at me, and never breaking eye contact, she licked my shaft, taking Charles' semen into her mouth. She then put her lips on the tip of my dick and swallowed me whole.

It was too much.

I came deep in her mouth.

She looked at me while I climaxed and sucked me hard during it.

Then, she slowly pulled back, revealing my completely clean cock.

"Open it." Ordered Stacy.

Helen complied. The interior of her mouth completely clean.

"Good." She continued.

She then spat in her mouth.

Helen swallowed and thanked her.

After that, my memories are blurry. They used us for the rest of the day until I was sent back home while Helen stayed with them.

For several days I got no news from them. Until one day I received a photo from Helen's phone.

She was getting fucked from behind by Charles while she was licking Stacy's pussy. She was on all her knees looking at the camera with a guilty face. Her arms attached behind her back. Semen, juices and marks all over her body.

It was accompanied by a sentence: "She seems to enjoy it more here than with you" with a kiss emoji.

I couldn't help but masturbate to it, even if it couldn't satisfy me fully.

Days later I received a huge package. The deliverers insisted they had to put it in my house before leaving.

When I opened, I saw, among the polystyrene, what looked like my wife. She was totally naked, face against the ground, ass up. Her wrists tied to her ankles and a metal bar between feet, forcing her to spread her legs. A dildo inserted in each of her holes.

On her ass was a note:

"It was fun but we couldn't keep her. We hope you'll remember it and we would be glad to make a rematch with the husbands in the future. In the end, we know your true nature." wink emoji.