Trapped in a Sex Machine

'Another day another dollar'.

I grabbed my mop and bucket and headed through the service entry into the medical clinic where I spent 5 evenings a week. As far as cleaning jobs go, it was actually pretty cushy; a lot nicer than the hotel rooms I used to clean before I landed this gig.

"Is that you Robert?" Ava the receptionist called out from down the hallway.

"Yeah its me. I'm just getting started with mopping. Have a good night."

I heard the familiar mumble of the TV in the waiting room turned off and the jangle of her keys as she opened up the front door

"All the doctors have clocked off for the weekend so if you need a hand with anything it'll have to wait till Monday."

"No worries - have a good weekend!" I replied to her.

An empty clinic meant I could finally clean the patient ward that's always occupied during the week. I opened the double doors to the large room to see the same old 10 hospital beds. The same old benches I'd be cleaning yet again and...

My eye was drawn to something unexpected.

To my surprise, in the centre of the room sat a shiny machine about the size of a large commercial dishwasher. It had steel sides and a shiny black top with two handles. It looked futuristic and had a circle on one side about the size of a dinner plate. It looked to me like a futuristic front-loading washing machine but the opening on the front was too small and too high for that to be right.

Upon closer inspection I found a sticker on the top that read "-Property of the Brookvale Urology Department: Sperm Extractor 2FH4-" along with a post-it note that just read "Don't move! Cleaning and servicing scheduled".

The lid of the box featured a large touch-screen on top with a few buttons on the side, much like a iPad had been stuck to the lid of a storage chest. Turning the device on, i browsed the different settings:

-VIBRATION-

-PULSATION-

-STORED VIDEOS-

I selected the video option and the whole roof of the box flashed to life with pornographic video. I saw a woman in front of me bent over with someone's hands on her hips. The busty woman was pushing back eagerly on a lengthy pornstar cock and moaning loudly.

I panicked and turned the volume down before remembering I was all alone. The male pornstar must have also been holding the camera, because the camera angle was above and behind the brunette with an immaculate pear-shaped ass. I watched as he sank his cock deep into her over and over. The visual effect was clear: for anyone standing next to the box the height of the round aperture of the box lined up directly with the woman's pussy.

I was desperate to try this thing - it was going to be like watching a VR porn video but with sex machine going wild in front of me! I felt my blood start to pump and curiosity get the better of me. I pulled the round cover off the front of the machine and was left staring down at a futuristic looking latex orifice.

It was round and a quick touch of the inside with my finger felt all sorts of rubbery bumps and grooves that only got softer the further I pushed my finger into the machine. I quickly pulled my finger out. The post-it note! This thing has been used!

'This thing needs a proper clean' I said to myself. I got to work pulling out the orifice component, which resembled a top-of-the-line fleshlight. As I pulled it out, the circular front panel now resembled a metal donut about 10 inches wide with a large empty hole in the centre. The hole lead to a large plastic container in the interior of the cube. It looked like a plastic fish tank, no doubt to collect the... donations.

The tank needed a clean, so I opened the heavy lid of the box. When I lifted out the hollow plastic cube I saw how spacious it was; about 1.5 metres on each side. Underneath it I could see all sorts of springs, wires and hydraulics.

'This thing is intense! I am in for one serious fuck tonight' I thought to myself with a smile as I got to work cleaning.

Once it was spotless I lowered the tank back into its place inside the machine, making sure to line the side with a hole in it to the front. Before reinstalling the pocket pussy in the hole in the front, I couldn't help pulling my shoes and pants off and freeing my erection. It felt a bit taboo being half naked in the clinic but my excitement took over.

I found a big bottle of lubricant among the medical supplies. I lubed up the pussy and decided to try it out on its own. I left the lube bottle on top of the machine and started pumping the pussy back and forth on my cock. It felt better than any woman I've ever been with: tight and textured and almost hypnotic.

I was rudely awoken from my trance by the sound of keys unlocking the front door of the clinic!

Fuck! Fucking Fuck what am I going to do?! If a doctor catches me like this, naked from the waist down, masturbating in the middle of the patient ward I was totally going to get fired for this. Maybe even arrested! I stashed the plastic pussy in a drawer and closed the patient ward doors as quietly as I could, then turned off the lights. I just needed somewhere to hide.

I looked around but there was nowhere. I went to grab my pants but I could hear footsteps approaching down the hallway! Fuck! There's no time! I had a thought and looked to the large collection space inside the machine. It was going to be a tight squeeze, but if I got down on my hands and knees I could probably hide inside there until they leave! There was no time to waste - I climbed into the box and gently pulled the heavy lid closed.

Suddenly I was surrounded by darkness. The only light source was the hole right behind me but my generous backside was blocking it. I didn't even have enough room for my head unless I pressed it down to the floor of the box.

I had barely found a somewhat comfortable position when I heard the doors swing open and the light switch on. I froze as still as possible.

"Wow its bigger than I thought"

"Yeah these newer models have all sorts of features. It's why they need to be serviced so frequently."

"What sorts of features?"

Two male voices, one higher pitched and one lower pitched were getting louder and suddenly I could feel someone tapping on top of the box.

"Oh you know - a TV for porn videos, hydraulics for vibration, anything to help these old guys get their rocks off".

"It sounds sick. Do... do you think we've got time for me to try it?"

I felt my heart stop and a cold chill run down my spine. I hadn't reinstalled the pocket pussy! I'd stashed it in some drawer like an idiot! This random guy is going to stick his dick in an empty hole and realise the machine isnt working! He'll open the lid to see what's going on and find me looking like some world class pervert! 'Oh gosh I'm destined for prison.' I thought.

"Well... we're only supposed to pick up the machines and deliver them to..."

"Oh come on - they'll clean it at the service centre anyway! Plus we're ahead of schedule."

My mind raced - pleading for the higher pitched voice to be a professional and just do his job without trying to stick his cock in a weird device. (The irony of my situation was not lost on myself)

Deep voice continued: "It might not even work - these machines that need servicing are sometimes faulty. If its faulty we're supposed to take them to the scrapyard".

The scrapyard! I had to figure something out fast.

"Just let me try it dude - look how high tech this thing looks."

"... aaalright you've got 10 minutes. I'll be in the waiting room."

Fuck fuck fuck fuck!

I heard the door close and someone tapping the touchscreen. After a second I could hear the sounds of the pornstar moaning. I knew in just a few seconds this guy was either going to feel an orifice up against the hole or they were going to take the machine to the scrapyard. If I climbed out now I'd get arrested for sure. I decided the only way out of this mess was to play along. I backed up my naked ass until I felt it pressed up against the wall of the cube. I felt a cool breeze on my hole and heard the sound of the lube bottle pumping.

The next thing I felt was a lubed up finger slide right down my tight hole. Oh god it feels so intense!

"Fuck this thing is tight!" I heard the mystery man grunt. He rocked his finger back and forth and I had to bite my hand to stop myself from moaning. Why did this feel... good? I'd never had anything up my ass before but my ex-girlfriend had enjoyed it when we'd tried anal sex. I was starting to see why.

After a few pumps with his strong digit I felt him pull his finger out. I heard the lube bottle pumping more lube and before I knew it, three fingers were cramming themselves into me.

"This thing feels so real dude you gotta try it out!" The man yelled down the hallway.

I struggled to keep myself still as three of his fingers wiggled and strained to push deeper into me. They pushed down to the second knuckle and I felt a stab of pain as they continued their forced entry. My butt felt like it couldn't take anything more.

I was relieved when he removed them; but only for a second. I could hear the pornstar getting louder as he turned the volume up and the next thing I felt against my entrance felt like a big wet thumb.

Oh God.

I realised the enormity of what was about to happen. Should I just get out of the box and accept the punishment? Or maybe... was there a part of me that was a bit curious what the other side of anal sex would feel like?

My decision was made for me as his slick member pushed through my tight ring. A moan escaped my lips as I felt suddenly filled, his warm hard cock spearing into me. Thankfully the exaggerated cries of the actress on the screen above me were near deafening at this point. It felt like he'd stuck his whole hand up me (but in reality it was just the tip of his modest 5 inch cock).

The lubricant was cool and helped ease the burning sensation, but it also helped him sink inch after inch into me. I tried squeezing my ass to slow him down but it had the opposite effect.

"Fuck me this thing is amazing!"

He grabbed the handles on top of the box and went to town.

He was fucking me slowly but forcefully, each thrust going slightly deeper than the last. I felt my breath catch and my heart race. Beneath me I could feel my cock hardening and push uncomfortably into the base of the box. This is getting me hard?? I have heard of guys cumming from a prostate massage but this was all new to me. Back and forth he sawed into me with his fuck stick - deeper and deeper. I felt my eyes roll into the back of my head as he hit a certain spot deep in me.

Before long I realised he was balls deep inside me as his balls pressed up against my taint. I felt a weird mix of shame and pride - on the one hand this was all so embarrassing but on the other I felt a sense of accomplishment.

I quietly congratulated myself - 'This guy thinks my ass feels amazing!'.

My ride was about to get more intense. I heard the control panel beeping to life and all of a sudden the cube I was crammed into started vibrating and rocking back and forth. As it rocked back towards my anal assailant I felt his balls slap into mine. The machine started to establish a rhythm. Forward and backward. It slid me off his cock and slid me back onto his cock. I realised I was drooling onto the floor and the intervals between thrusts was getting shorter.

He started pumping faster now, fully in and almost fully out- slamming back into me over and over. As the machine pushed me onto him, he pushed himself deeper into me. He was hitting new depths and my virgin ass was getting thoroughly deflowered.

Over and over he plowed into me as the chorus of the virtual pornstar's moans mixed with my own. I tried to reach my own cock to jerk off but the walls of the box were too tight around me - I was stuck here on the end of his dick with nowhere to go. He was going to fuck me as hard and deep and fast as he wanted. Even if I called out for help I doubt he could hear me.

"Fuck... its too much..." I heard him gasp.

I felt his length thicken and tense inside me and suddenly he was cumming. He pushed as deep as he could and grunted and shook and after a few more gentle pumps he pulled his cock from me slowly, having shot the last of his seed deep inside. I heard him rezipping his trousers.

"Fuck yes dude that was so good! Hey Steve come give it a whirl!"

"Are you done already? Let me guess your girl has a vibrator in her bedside drawer".

"Fuck you man - this thing is tight and warm and designed to make guys cum. I bet you $20 can't last longer than 10 minutes."

"Oh yeah?" Replied Deep Voice.

'Oh God here comes round two' I thought to myself with a nervous smile.