The following morning seemed to roll around far too quickly. We'd both gone to sleep early with the TV on, still shattered from the weekend’s adventures. I'd never fully recovered from Friday and it seemed Saturday took a lot out of her. I was a little out of it for most of the morning, just really coding on autopilot.

"Seriously Bob, what the hell is up with you? Was Friday that much of a monster?"

Laurence was leaning over my partition, a cup of coffee offered out to me. I grinned and took the proffered mug.

"Laurence, Friday’s with you are always a monster" I lied. I couldn't exactly tell him that thanks to his mad drinking session in the wrong part of town, I'd done some shopping that had made led to my girlfriend showing me a whole unseen side of her. Laurence lifted his chin up like some sort of super hero striking a pose.

"Yeah, well, I do pick em"

"Pick what?"

Laurence turned guiltily to Rachel who had sidled up beside him. Rachel usually had him lost for words, like most of the guys in the company.

"Err, I...”

"Bars" I leapt into his defence "Laurence always picks good bars"

"Is that right Laurence?" Rachel smiled up at the towering man. She looked flushed and her voice had a little quiver to it, "How come you never invite me but always invite Bobby?"

"Well it's always a boys night" Laurence replied timidly. This was the guy that after a few beers would hit on everything in sight.

"Well maybe you should invite me next time" Rachel didn't even give him a chance to reply and turned to me. "Do you mind if I go shopping tonight Bobby? I need to grab some stuff"

Stuff usually meant new clothes.

"Sure Rach, are you going grab dinner too or should I knock something up?"

"Nah, I'll bring Pizza" she said over her shoulder as she slowly walked away, almost a little unsteady. "Bye Laurence"

Laurence was staring after her slightly dumbstruck. "Man you are one lucky son of a bitch"

I grinned but carried on watching her pert ass sass away "You have no idea"

The day dragged on as Mondays do but I finally got home around six. I pretty much slouched on the couch as soon as my shoes were off and fired up the Xbox. Time vanished until I heard the door go. Rachel came into the lounge and handed me a pizza box with a grin.

"Sorry I'm so late, there was lots I wanted to get!"

"What do you mean by lots?" I wondered if we'd be clearing her store cards for a few months again.

"Eat your pizza and I'll go get changed and show you"

I took a slice from the box (half eaten, she'd been hungry) and munched away, intrigued. About 10 minutes later she walked back in the room. She'd piled her hair up in that messy sex kitten look that only a few women could manage and was dressed in a brand new suit. Rachel is usually conservative but this was something new. The skirt only came down to mid-thigh and the blouse was low, showing ample cleavage. My jaw dropped.

"You like it?"

"Rach, it's stunning! You look amazing!"

A cheeky grin lit up her face. She took the jacket off.

"Wait until you see what's underneath"

She slowly unbuttoned the blouse and slid it off to reveal a silky bustier pushing her ample bosom up. She then wiggled the skirt down her legs to reveal garter and suspenders, making her legs look longer than her diminutive stature was.

My jaw dropped further than I thought possible as my cock sprang to aching attention. Rachel padded over to me.

"After you got me such wonderful gifts at the weekend, I thought I'd get you some too"

She leant over, her cleavage in line with my eye line on the sofa as she undid my pant sand pulled them and my briefs down. My cock began to ache it was so hard.

"So you do like it" she purred, straddling me and pulling her silky knickers to one side. She lowered her dripping cunt onto me. I slid in to the hilt, no resistance in her pussy still after the weekend. We both groaned in unison.

"I've needed this all day" Rachel rose up and down steadily, a slurping sound coming from our joined organs. She was sopping again.” I even took the little dildo to work and used it at lunch time"

I couldn't believe my ears.

"Really?"

"Yes. When I came and saw you I still had it in. It has a small battery bit in it and it can vibrate. I had it in for about two hours at my desk!"

I grabbed her hips, helping to force her up and down harder. She bit her lip.

"Mm good!"

I kept the pace steady.

"You're a dirty girl, having a dildo in your pussy at work"

Her eyes lit up at that and a flush began to creep up her chest.

"I know, it felt so naughty!"

"I want you to do it again Rach. I want you to do it every day this week"

"I'm not sure I could"

I began picking up the pace, my cock plunging into her and rubbing at the front of her cunt where I knew I'd start hitting her g-spot.

"You will" I said with force, banging into her with increased speed, hammering her soaking pussy. She started groaning on each thrust

"Tell me what you’re going to do" I knew she was close.

"I'll try it every day" she panted out.

"Tell me what you’re going to do!" I flicked one of my thumbs around to her pussy and aimed at her clit but didn't touch it. She was getting close, her eyes were closed in ecstasy.

"I'm going to wear the dildo every day!" She moaned.

"I didn't hear you" I flicked her clit to set her off

"I'm gonna stretch my pussy every day!" She screamed as she came, a shattering orgasm wracking her body as her pussy clamped on my cock, triggering my own orgasm.

We lay in a heap on the sofa for 10 minutes and recovered our breath. Rachel then lifted off me, her wet pussy dripping with my sperm as she stood on wobbly legs. I stood up and kissed her. Then pulled up my pants.

"Are you sure you want me to have the dildo in everyday? I mean, won't I get a bit loose?"

"I love how you love it baby" I replied. I turned away and headed off to the back hall to the bathroom and bedroom. "Besides," I said over my shoulder, "how else will you manage the big one without practice?"

Rachel spent the next few days at work with the dildo in her pussy. She was clearly enjoying it, as her face was constantly flushed and a ghost of a smile was never far from her face. The guys in my team noticed when she came past, but more because her new outfits showed quite a bit of skin. It seemed that the kinkier she got, the more confident she became with her clothes. When I talked to Rachel I could feel their eyes burning into us. Rachel noticed too.

"You don't mind?" She asked one evening after work.

"That all the guys are jealous of my beautiful girlfriend? Not at all"

She sat quietly for a minute then asked "You don't mind then undressing me with their eyes?"

"No, it’s harmless. I mean, it's not like you are ever going to sleep with them!"

Rachel smirked, "Well, never say never"

She wore the dildo all week. Every evening she'd get home and be ready to pounce on me as soon as I came in the door. It was the same each evening. She'd lay on the bed in lacy knickers of some sort, holding the dildo in. I'd then either pull the dildo out (which each night slid out a bit easier) and then either fuck her sloppy wet pussy until we can, or fuck her with the dildo until she came (which wasn't long!). Her pussy didn't quite shrink back every night, becoming a bit looser and gaping a bit. I knew what was coming. Friday she said the magic words at lunchtime.

"I want to try the big one tonight", then sauntered away. I felt a grin break out on my face. I turned to get my coffee and noticed Laurence looking at me. He just gave me a knowing wink.

The day couldn't drag anymore and i’d got work that kept piling up. 6 o'clock came and went before i finally managed to get done and I probably broke the speed limit getting home. As I came through the front door, I saw her shoes and jacket dropped in the hall. I followed the trail of clothes to the bedroom, adding mine to the trail. She was waiting ready in the bedroom, naked, slowly rubbing her clit. He pussy glistened from where she was wet and she was pulling the medium dildo in and out. I reached into the drawer and pulled out the big dildo. It was huge. I held it up for her. It was black and had several almost squashed balls making up its length, each larger than the last, with a pointed top. It started at around 3 inches circumference to about 7 at the base with a pointed section on the top to ease it in.

"Are you sure you want this Rach?" I had to give the chance to refuse. Her eyes looked fiery. She was squirming on the bed.

"I need it Bobby" she almost pleaded with me. "I haven't stopped thinking about it all week!" I sat between her legs and held the large dildo in one hand and placed my other on hers, taking the dildo still buried in her cunt from her. I slowly drew it out, a slow sucking noise accompanying it and a drawn out sigh escaping her lips as if she missed it as it was removed. The dildo was slippery from her juices so I ran my hand up its length then threw it to the floor. I rubbed my hand along the big dildo still in my hand, moistening it. I looked at my girl.

"Put it in me Bobby," she whispered "put it in my cunt"

I positioned the head of it at her pussy. She twitched as it made contact, her hole almost mouthing the head of it. I held it like a dagger, poised to strike. She wiggled her hips and started whining like a dog, desperate for me to put the pressure and push it in. I obliged.

Her eyes widened as the head of the monster dildo pushed her cunt open. Her expression didn't change apart from her eyes, but I could see her knuckles whiten as she gripped the bed sheets. Her chest flushed a deep red. As the head slipped into the first ridge and lodged inside her she threw back her head and howled as an orgasm took her, her legs shaking and the grip on the sheets tightening. I held the dildo in place, keeping the pressure on her cunt. She looked back at me, still trembling and moving her hand to her clit and rubbing it.

"More. I want more."

I began to increase the pressure and the second section began expanding her pussy, stretching her more than the first. She rubbed her clit faster. The second section plopped in. I looked up at her face and she caught my eye. I knew she wanted me to keep going so continued to push, putting more pressure on her battered cunt. The third section, about 4 inches around, stretched her cunt and slowly disappeared into her. Her frigging was now a blur as she brought herself to another orgasm, this one through gritted teeth. I eased the pressure and began working the third section back and forth, trying to get lubricant from her pussy to help start the fourth section on its way, but her lubrication was running low. Although her body had a sweaty sheen coating it, her pussy was going dry

"Baby, I'm not sure that the next section will go in."

Rachel's eyes met mine. They were full of lust. I was already rock hard but the look she gave me tightened my cock even more.

"Why not"

It wasn't even a question, it was a statement of intent.

"You're going dry, there's not enough lube."

There was no hesitation in her response.

"Spit on it"

My girl was becoming nasty and I loved it. I'd watched a few videos of girls taking big dildos but had never imagined my sweet Rachel would do it. I leant over her pussy and spat on the dildo, Rachel rubbing her hand around her stretched pussy and the huge lump sticking out from it.

“Do it again” she commanded. I spat again as she rubbed it in.

“Give me more”

I looked at her with a coy look, just keeping the pressure enough to hold the dildo in place. I was in control, not her.

“I'm not sure you deserve it”

“Give me more” she growled

“I think you've had enough” I started to pull back

“No!” she whined. I pushed back hard, the fourth section stretching her brutally as she grunted in pain and pleasure. I kept the pressure up and her pussy lips stretched around the thickest part. Even with the extra lubrication it was slow going. She was panting again and I could feel her pushing her hips back.

“Fuck!” another orgasm took her as the fourth section slid in. I started fucking it in and out of her pushing her orgasm on for as long as I could. When her shaking subsided she looked in my eyes, hers feral with lust.

“I need to take more! This is fucking awesome Bobby!”

“I don't think we can get more in at this angle baby. I think you also need get more practice with the other dildo.”

She looked crestfallen

“But Rach, this is the most fucking erotic thing I've ever seen! I love how much you want this dildo stretching your pussy”

A wicked grin crossed her face.

“I love how you love it Bobby”

“Let's finish for tonight and give your pussy a rest. It's only Friday, we've got the whole weekend to work your cunt!”

She nodded, her sweat damp her sticking to her forehead. She took the dildo in her hand and slowly pulled it from her cunt, a popping noise as each section came out. She sighed in pleasure as each ridge stretched her on the way out until the last section slid out with no resistance. Her cunt didn't close up, it looked red and gaped open. She then shocked me by taking the dildo and licking the drying juices from it, never taking her eyes from mine.

“Baby, could you go get me a drink? I'm parched but want to return the favour to you...”

My cock needed relief. “Sure Rach, I'll be right back.”

I got off the bed and walked to the door.

“Beer please baby” she called after me.

I wandered through the apartment to the kitchen and went to get two beers from the fridge. I grabbed the bottle opener and cracked them open. I didn't realise how hot I'd got as well and almost downed the first beer. I grabbed another, grabbed a bag of chips then head back to the bedroom.

“Grabbed some chips as well Rach, thought you might be....”

The words died in my throat. Rachel was out of the bed squatting over the dildo, now standing to attention pointing like a rocket at her gaping pussy. She had an empty tube of lube in one hand and gripped the greased dildo in the other. She grinned at me, all teeth. My delicate girl had been replaced by this wanton slut.

“I'm going to take this dildo baby”

Rachel began her descent, the head pushing into her cunt. She dropped the empty tube and used her arm to balance herself on the bed, allowing her to slowly lower herself, clearly savouring every single second as it slipped in. I put the beer and chips down and stood back to watch. Rachel continued to moan as she lowered down the massive invader, the strain clear on her face, her eyes squeezed tightly shut. A sheen of sweat had broken over her body. She lowered over the first three segments, the lubrication and the previous work out making it easy going. She lowered into the fourth segment, her moans increasing and sweat beading at her brow. Her legs trembled, from the pleasure or the pressure on them I couldn't tell. It slipped into her with an audible slurp.

"You've taken four baby" My voice was soft. Rachel looked at me, a smile on her face. She squatted up and down, the segment slipping in and out of her abused cunt with little resistance.

"A way to go then"

She slid down to the fifth, her lips stretching wider as she tried to engulf the next section. She continued to raise and lower herself. I sat on the floor in front of her for a better view. The dildo was slick with the lubricant and the sheen of her pussy. Her breasts heaved as if she was running, bright red nipples fully erect, beads of sweat running down her cleavage. Her hair was plastered across her face. Slowly the fifth segment slid in, causing another orgasm to take her, her body shuddering. I'd lost count of the number she'd had that night. Her thighs were shaking. Her hand gripped the bed sheets, bunching in her hand. She was clearly struggling to hold herself up, but I could tell she was determined to continue. She was only half way and wanted to take it all. Her body shaking, she lowered herself to the sixth segment. It must have been 4 1/2 inches wide and her pussy lips were stretched thin. I wasn't sure if she would hurt herself, tear herself, but was so caught up in her lewd act it was only a fleeting thought. It was at this point her legs finally gave way. With a gasp she slid forward to her knees, but her weight pushed her down onto the huge dildo on the floor. Her head tipped back, her eyes went wide and her mouth opened in a wide O shape, no sound coming from her.

"Shit Rach! Are you ok?"

I got no response, her eyes were wide but unfocused. I leant in closer to her.

"Rach?"

Her hand came up and pushed against my chest. It was twitching. Her eyes rolled back in her head.

"Argh!" She screamed, an animalistic roar pulled from her throat. She was having an incredible orgasm from the sudden penetration. She shook for a few good minutes, tremors wracking her body. As it subsided I asked if she was ok again.

"It hurts so good" was her confused reply, her hand rubbing at her clit. I looked down. She must have taken nearly a foot of the dildo. Where it had vanished into her petite body I couldn't say. It was about 5 1/2 inches wide where it had reached, her pussy lips stretched so thin it looked like a rubber band ready to snap.

"I think it's against my cervix. I don't think I can take anymore tonight"

I looked at her, her face was flushed and she was panting like a dog. I chuckled

"Baby you've got a foot of rubber buried in your cunt. I think that's more than enough for any night!"

A weary smile crossed her face.

"I need more practice then"

She slowly lifted herself on her knees, her pussy forcing the dildo back out. She groaned and lowered herself back down a little then tried again.

"Are you fucking yourself on that?"

She giggled.

I stood up in front of her and offer her my hand to help lift her up. "Come on, up you come"

Her eyes looked at my waist and her hand snaked up, but rather than taking my hand, she grabbed my cock, pulling me closer to her face.

"This looks tasty"

She licked around the head, my precum swirled by her tongue.

"My poor baby needs looking after" she murmured, before engulfing it in her mouth, sucking me down. The erotic show had been too much for me and I came in less than a minute, my cum filling her throat. I could feel her moaning around my cock where she was working the dildo in and out of her cunt and having another orgasm. After both our orgasms subsided she allowed me to lift her off the dildo. A lewd slurping noise accompanied her groans as she stood with the dildo slipping out of her gaping hole. Her pussy hung wide open. She saw me looking.

"I think I broke it" she murmured.

"Broke what?"

"My pussy"

I put my hand down and slid it halfway in her pussy with no resistance.

"Seems fine to me"