"Harder!" Marie screaming as I thrust into her, "Fuck me harder, goddamnit!".

Her body writhed beneath mine and her outstretched hands pulled at their bonds, rocking the wooden headboard against the sheetrock of the wall. If the neighbors hadn't already been woken by her screaming then they were certainly awake now.

"Choke me; cover my mouth so I can't scream!" She implored.

I pounded her as hard as I could; I could feel myself approaching climax; then suddenly a bright light turned on and I heard a familiar voice from across the bedroom.

"Hi there, Thomas."

It was my ex-girlfriend Rachel. She was holding her phone, evidently having just taken a picture.

"It's payback time."

A few months earlier Rachel had thrown me out of her apartment when she heard from a friend that I'd been cheating on her. After almost 3 years of what seemed to her to be an idyllic relationship, she was devastated by the news of my infidelity.

Therefore I was shocked when Marie, Rachel's best friend, called me out of the blue and asked me to dinner some three months later. It was fun and effortless catching up with her: I had always been fond of her whilst I dated her friend. Maria was an actress who always played ingenue roles: though she was approaching thirty, she still had the petite frame and innocent look of a 18-year-old. She and Rachel were a study of physical contrasts: Marie blonde, fair skinned and short with small, pert breasts: Rachel exotic, dark-haired and naturally curvy.

I was even more shocked when later that night Marie brought me back to her apartment after dinner. I should have known something was amiss, but I didn't hesitate when she beckoned me into her bedroom; I didn't hesitate when she ordered me to lash her wrists to the headboard and fuck her senseless...

"Rachel, what the hell are you doing here?" I shouted. As I turned back to look at Marie, she used all of the strength in her small body to buck me off of her. The expression on her face had turned to malice.

"Untie me now, you fucking perv." Spat Marie, and I quickly obliged. She stood up and brushed off her naked body.

"Ugh, I can't believe I let him fuck me."

"Don't worry, this'll be worth it," replied Rachel.

"What the hell is going on here?" I again demanded.

"Here's the score," explained Rachel, "We have pictures of your hand print on Marie's neck, pictures of the marks the ropes made on her wrists. I have pictures of you holding her down with her hands tied to the bed; that's a hell of a lot more evidence than in most rape cases. And even if you weren't convicted everyone you know is going to hear about how you're a filthy rapist. So let's just say I have a fair amount of leverage over you right now.

"So here's what we're going to do: I've bought you a little accessory, and you're going to be wearing it for as long as I say" She then pulled a small plastic contraption from her purse and tossed it on the bed next to me. "It's called a chastity belt, though I suppose 'belt' is a bit of a misnomer. That ring goes around the back of your balls and the tube locks onto your dick. Now put it on."

I stood there, stunned, motionless.

"Put it on now, or we take a trip to the nearest police precinct." Commanded Rachel, cold and matter of fact.

There were four different sized rings, so I grabbed the largest and was barely able to fit it around the back of my scrotum. I moved the pins into place. But as I picked up the front piece I realized that there was no way that tiny cage was going to fit over my shaft.

"No way, Rachel, it doesn't fit. I guess your master plan isn't going to come to fruition." I said.

"Nonsense", replied Rachel "I just need to grab some ice."

I nervously gulped as Rachel returned from the kitchen with a large bag of ice, which she applied mercilessly to my genitals. After an agonizing few minutes, she removed the bag and I had shrunken to a fraction of my former self.

Marie let out a cruel laugh: "And I didn't think you could get much tinier!"

"Well, now that you've shrunken so nicely, it's clear we should be using a smaller ring!", Rachel said, removing the old ring and grabbing one two sizes smaller. She wrenched the back of my cock and balls, cruelly pushing the tiny ring over the sensitive flesh with evident delight.

"Rachel, you can't: it's too small!" I cried.

"Too bad. Looks like a perfect fit to me."

And with that she slid the tube over my shriveled cock and, with a click, quickly locked it to the back ring. A smile parted her lips.

"Now obviously that chastity belt is not Fort Knox: you could certainly cut that lock with small pair of bolt cutters. But rest assured if you do, we are bringing those photos right to the NYPD. So let's get this party started: lie face down on the bed and stretch your arms over your head"

I did as I was told, the unfamiliar sensation of my caged cock rattling between my legs, and Rachel began to bind my wrists and secured the rope to the headboard. Marie simultaneously forced by legs apart and tied each of my ankles to the bed posts. I was completely exposed with my legs spread wide.

Out of the corner of my eye I saw Rachel reach into her bag once again. She pulled out what looked like a large rubber cock with a leather strap mounted to it.

"So I had a little fun at the shop where I bought your chastity belt. This right here is called a penis gag."

Rachel was clearly enjoying herself. She approached the bed and told me to open my mouth. At this point I knew better than to argue. Rachel shoved the rubber phallus into deep into my throat until I nearly choked and secured it behind my head.

"That takes care of one of your holes" She said ominously, "We shall take care of the other momentarily. First, Marie, it really seems unfair that I'm the only one here wearing any clothes..."

And with that Rachel stripped off her clothes to reveal a set of delicate black lingerie, a set that I had bought her the previous Valentine's day. Black silk thong, garters: she looked incredible. Despite my predicament I could feel my cock try and swell in its plastic prison at the sight of her ample breasts. The pressure and the frustration of that failed attempt at an erection were like nothing I'd ever felt: a sublime mixture of pleasure and pain, frustration and lust.

Those feelings were soon replaced with fear, however, when I saw Rachel remove yet one more item from her bag: an enormous strap-on. She smiled, a smile of straight, unadulterated evil as she shimmied the harness up her hips. At that moment I had lost track of Marie, until I felt a hand near my ass, rubbing a liberal amount of what felt like lube all over.

"He's all ready for you", chucked Marie as she slapped ass.

I was paralyzed with fear as I watched a naked Marie approach my strap-on and lingerie clad ex, and rub lube all over Rachel's rubber cock. Marie kissed Rachel, and they both looked right at me with a look that was half disdain, half amusement.

"You never should have fucked around on me, Thomas."

And with that, Rachel got behind me and thrust her cock deep inside me. I thought I was going to pass out from the sheer pressure and the pain. She rode me mercilessly, thrusting every inch of the dildo into my ass as I cried into the gag. Through moistened eyes I could see Marie with her phone, filming my predicament and holding back laughter.

After what felt like hours (Marie took her turn fucking me as well), the two of them undid my bonds and removed the gag. I fell the the floor in exhaustion, wearing nothing but my chastity belt.

"Go to the bathroom and clear yourself up," ordered Rachel.

I did as much, and when I returned from the bathroom I was stopped in my tracks by the site: there was my ex, fully nude, standing in an embrace her equally naked friend. The kissed passionately, lips locked, hands groping each other's buttocks. After a moment, Rachel looked up at me, and then pointed to the lingerie she'd discarded on the floor.

"That's for that gift, but I'm not going to be needed it any more. I think you should have it."

"Rachel, feel free to keep it", I said. "I'm not going to do anything with it."

"Oh yes you are. You're going to put it on right now. If you argue with me I think it'll be a few more hours with that strap-on"

I picked up the lingerie and put it on, fumbling with the bra and garters as the ladies cackled with delight. When I was finished the panties barely covered by chastity cage. I could then see Marie whispering into Rachel's ear. After a moment, Marie went into a drawer and pulled out a brunette bob wig, and then rummaging through her closet she produced, to my absolute horror, a French Maid's dress.

"So, Thomas, I just need you to do me one favor before you go. As you can see, my place is a bit of a mess, so I'd just love it if you could put these on and give the place a little once over. Whaddya say?"

"Marie, please!" I begged, "Please have some sympathy! This is beyond humiliating!"

"No, Thomas!" Shouted a suddenly furious Rachel, "Humiliation is getting cheated on by a bastard like you and having to live with that shame. It's about time you learned that. Now put on the goddamn dress and wig or we are going to have a real problem here! And in the interim, Marie is going to pleasure me in a way you never could"

Defeated, I obliged, as I watched Marie position her head between Rachel's legs. I spent the next hour on my hands and knees, scrubbing the bathroom, sorting the laundry, all to the soundtrack of my ex-girlfriend moaning with delight as she was orally serviced by her beautiful friend. Every time I tried to steal a glance of them writhing in bed, my cock strained to get hard in its tiny cage, and I looked away in a mixture of pain and longing. After a while the moaning stopped, and I looked up from my hands and knees to see Marie standing over me.

"Well, I think you're just about finished now, so get up." She said. Then she handed me my wallet and keys and added, "get the hell out of my apartment."

"I need my clothes first"

"Why, I think you're dressed quite perfectly."

"I can't go out like this!"

"You can and you will" said Rachel, standing by her friend's side as the two of them began to back me out of the apartment.

"No, no, please!"

Marie opened the door as Rachel forced me into the hallway. Luckily for me there was no one else in it, but I'd surely have no such good fortune down on the street.

"Make sure you keep that uniform" said Rachel, "my apartment is filthy too, so I'll probably be calling on your services sometime in the next few days!"

And with that, Rachel blew me a kiss and closed the door. I heard the deadbolt slide shut as I stood in her hallway wearing lingerie, a maid's uniform and a wig, with my cock securely locked in a plastic prison. I had no choice but to start the walk downstair to the street...