Feign colour-blindness

"Do you like your surprise?" Kirsty asked. I grinned back, speechless. "Those instructions are quite strict, though, aren't they?"

"Yeah, well, you wouldn't want something to go wrong," I answered.

"Oh, it's just what they do for marketing so they can sell more pills," claimed Kirsty. "They both do the same thing - turn you on and expand your sexual body parts. Oh, and make you fart more, apparently." She went to the bathroom and came back with two glasses of water. Then she picked up the blue pill.

"Are you sure about this?" I asked, nervously.

"Of course. Let's do it!" she handed me the pink pill and swallowed the blue. Shrugging, I took the pink pill, and we headed off for dinner.

All the tables were set for two, and most of the other guests were already seated when we were shown to our table. Kirsty loves her food and we were treated to a delightful three-course meal. Anna the barmaid was waiting on our table and there was plenty to choose from on the menu; I had pate on toast for starters, a steak and ale pie as a main and a vanilla panna cotta for desert. It was all delicious, and very filling. Normally Kirsty would be completely uninterested in sex on a full stomach, so I was a little worried that I would be disappointed this evening.

As I finished my last mouthful I looked up at Kirsty. I hadn't noticed any physical difference in her yet, and was feeling a bit bloated from the meal myself. I glanced down at Kirsty's breasts and back up at her. She looked down too, cupped a breast and said, "Nothing yet." She then looked furtively around at the other diners. I also looked at the couple nearest us; the woman's tits were definitely bigger than they had been when we sat down, and I could see an impressive tent forming in the man's trousers. Licking his lips, he stood up, bent slightly and farted before taking the woman's hand. She also stood, her eyes fixed upon the tent in his trousers. She let go of his hand and cupped his arse cheek as they made their way out of the bar.

Looking back at Kirsty I could see she had been watching them too. She had a slightly disgusted look on her face.

"Did he just fart in the middle of the restaurant?" she said. But then the look on her face turned to one of surprise. My eyes were drawn to her cleavage - her dress was getting visibly tighter and I was sure her boobs were bigger than I'd ever seen them before. But that didn't seem to be what had caught Kirsty's attention. "I need to..." she said, but finished her sentence by lifting a butt cheek and emitting a loud, sustained fart from her perfect little arse. The noise drew some looks from couples on other tables, but there was not tutting or looks of disgust - instead there were smiles and nods of approval.

My own stomach was churning too, and after such a large meal my shirt was feeling tight. But, unusually, it wasn't particularly around my tummy, but around my chest that I felt it most.

Then I noticed a faint tingling sensation behind my testicles. I put it down to having been sitting on the same chair for quite a while and shifted position slightly to try and get more comfortable. I noticed Kirsty was wriggling slightly on her chair too.

"Are you all right?" I asked her.

"Yes, I..." she started to reply, and then stopped abruptly, staring at my chest. My shirt was feeling even tighter now and my nipples seemed more sensitive as they pushed against the fabric. I glanced down to see what Kirsty was looking at, and was astonished to see two perfectly formed breasts pushing against my shirt, the buttons beginning to strain as they continued to grow. Looking back at Kirsty I saw her licking her lips and staring at my newly acquired boobs. One of her hands slid beneath the table and began a rubbing motion, and her eyes widened in shock, her mouth opening in surprise.

My tummy continued to churn and I definitely needed to fart, the pressure increasing against my anal sphincter by the second. I let rip, revelling in the relief it brought, but then startled by a new sensation. The tingling between my balls and arse was stronger, and then I felt something different - something deeply pleasurable - and I noticed that my pants felt wet down there.

I wanted to find out what was going on, but the hotel dining room wasn't an appropriate place to pull my trousers down.

Kirsty interrupted my thoughts with a soft moan. I looked across at her and she was still staring at my expanding chest, my shirt very uncomfortable now. Instinctively I put a hand on my chest to try and contain them. As soon as I touched my nipple I felt another lovely sensation between my bollocks and arse, and my pants felt even wetter. But my eyes were on Kirsty - she still had a hand under the table but the motion was odd - it looked like a stroking motion, her hand moving away from her body and back again.

"I think we should go back to our room now," I said. That seemed to snap Kirsty out of some kind of trance and she lifted her eyes away from my chest and nodded in agreement. I stood, feeling a definite, not unpleasant, moisture between my legs, and offered a hand to Kirsty to help her up. It was then that I saw that her skirt was being lifted up from underneath by something poking out from her genital area, and this is what her hand was stroking. She saw me looking, smiled, and stood.

We practically ran to our room. My cock was hard and I was **** to fuck Kirsty with her newly huge tits, but I was intrigued by what was going on with our bodies. Just as much as I wanted my cock inside her, it was apparently I wasn't the only one with a huge, eager dick - and Kirsty no longer had the monopoly on big tits.

We entered our room and shut the door. Kirsty grabbed my shirt and wrenched it apart, setting my huge new tits free. It was amazing looking down to see two huge, perfect boobs proudly jutting out from my body. Kirsty locked her lips then bent forward and started sucking my left nipple. The sensation was incredible, shockwaves of pleasure coursing through my body, seemingly along my hard cock and also between it and my anus. I allowed my hand to go down there, stroking my dick initially but then moving backwards to where the tingling sensation had come from. I rubbed a few fingers gently there and it felt incredible.

Kirsty stopped sucking my tit and took a step back. I immediately glanced down at her tenting skirt, and couldn't resist kneeling down to explore. I lifted her skirt over the cause of the tent and was met by a huge, fully erect, youthful looking cock. It had torn straight through Kirsty's frilly, sexy knickers, and was drooling pre-cum.

The musty smell was intoxicating and I just had to taste it. Without hesitation I wrapped my lips around it and licked the head my wife's brand new cock. Her reaction was immediate and powerful.

"Uh! Oh yes!" she exclaimed, thrusting her dick further into my mouth. I gagged and pushed her away so I could get her dick out of my gob. She stumbled backwards onto the bed, sitting down on the edge of it. She looked amazing, her massive tits barely contained by her tight blouse and a big, firm cock protruding from her nether-regions. I looked down at my own body - but all I could see was my own massive pair of tits.

My hard cock was pushing uncomfortably against my pants and trousers so I undid them and let it loose. Pulling my pants and trousers right down, my hand instinctively moved to my other new body part. I rubbed my moist pussy, and slipped a tentative finger inside the slit that hadn't been there just half an hour or so ago. I sniffed my finger and smelt the juice from my brand new cunt, looking back across at Kirsty who had now undone her blouse and removed her bra so I could see her massive tits in all their glory.

I took a moment to look over my wife, taking in her face, her enormous boobs, her eager new cock.

"Do you like what you see?" she asked, one hand fondling a tit and the other gently stroking her dick.

"Yes, babe. Show me what's underneath," I said. She rolled back on the bed and spread her legs wide; underneath her substantial balls was her pussy, then her arse. She rolled forwards again.

"Now let me see yours," she ordered. "Come here and bend over, bad boy."

I obeyed and she stood, moving around behind me as I poked my arse out at her.

"Oh, we have to try this," she said, her hands reaching round from behind me and grabbing one of my tits in each. Feeling her hands on my sensitive nipples sent pleasurable shockwaves through my body again, as I felt her own boobs pressing against my back.

"Yes, babe, feel my tits," I said. Not something I imagined saying a few hours earlier, but it felt so good. "How do they feel?"

"Mmm, so soft, so smooth, so firm," she cooed from behind me, my pussy getting wetter by the minute, my cock twitching in anticipation of a good fuck. Then I felt something hard between my butt cheeks, sliding down between them and on to my wet virgin cunt. "I've got to put it in you," Kirsty said from behind me. "I need to, it's so hard, I'm so horny, I..."

"It's ok, babe," I replied softly. "I want it. I want to feel you inside me. Just be gentle, it's my first time!"

"Well I've never exactly done this before either," she giggled, and I felt the lips of my brand new pussy being parted by my wife's hard cock. It seemed they were being parted wider and wider - it felt so hard, so unyielding, I couldn't help but give a girly little gasp.

"Uh, it's so big! So hard!" I observed.

"Yes, and I'm going to fuck you with it!" replied my wife. This was shocking; she never usually swore or talked at all dirty. But then again, she never usually had a hard cock that was **** for its first fuck. She pushed in further, and I felt a pressure as it seemed to hit against something. But she kept pushing her cock in and whatever the blockage was, was gone.

"What was that?" I asked, not expecting her to know the answer.

"Well, Billy dear, I do believe I just broke through your hymen," replied Kirsty, "and now your virgin pussy is all mine!" Her grip on my tits tightened as she pushed her giant cock further inside me. Although the head was now inside my pussy lips, the shaft of her penis still seemed extraordinarily wide as it made its way further inside my body. My tight pussy clenching on to this rude intruder. I could feel her dick going further into my body and every millimetre, every undulation on the surface of her cock, sent rivers of pleasure through my nervous system.

"Ah! Aaah! Ooooh, yes!" I said - pretty much involuntarily. She stopped probing forwards and started to slowly withdraw her cock from my fuck-hole. My pussy lips were still clamped to her dick and it felt like she was turning my virgin cunt inside out. My own dick was hard as iron and leaking pre-cum on the bed as she once again changed direction, her cock once again going deeper inside me. It was so weird feeling her inside my body. So weird and so good.

"Tell me how it feels," she said, and I tried to describe it, but couldn't find the words.

"Sooo good, so big, so hard. Oh, so deep. UH!" This last as she again withdrew her cock a bit, then thrust back inside.

"YES!" I cried as she did it again. "Oh babe, yes! Yes, I want it. Fuck me, babe, fill my little virgin pussy with your big hard cock! Yes, fuck me! Harder, faster! I'm your little bitch, give it to me!"

"Well alright, then, little bitch, have it!" she said aggressively and started thrusting into me harder and faster. I can't remember what I said then, the sensations running through my body as my wife fucked me were just so incredible. I was panting and gasping, squealing incoherently. Kirsty, meanwhile, fucked me with a determined **** and steady rhythm, her breathing quickening and deepening as she did so. Her breaths developed into sighs and pants, and then, suddenly, there was the sensory equivalent of a blinding light coursing through my body. I could feel an extra heat as a warm fluid spurted rhythmically inside me, and immediately I noticed a slight softening of my wife's cock. But at the same time my nerves were jangling, pleasure receptors I didn't know I had firing all through my body as Kirsty's pumping slowed, and eventually stopped.

We stayed there for a moment, breathing heavily, the reality of what we had become and what we had just done gradually dawning upon us. Kirsty removed her clammy hands from my tits and began to slide her cock out of my pussy. It still felt incredibly huge, and once again it felt like she was turning my vagina inside out - especially when the head of her cock reached the lips. Gently, she removed it, and I was free to move. I turned to face her and saw a strange look on her face - some odd mixture of exhaustion, guilt, love and lust. I realised my own face must have been equally odd - I felt shocked and exhilarated, still horny yet utterly tired. We collapsed into each other's arms, our boobs colliding as we hugged for a moment, then broke away. We sat down on the edge of the bed, next to each other, Kirsty's dick soft and droopy and my own now only at half mast. We stayed quiet for a while, lost in our own thoughts.

"That was weird," I said cheerfully.

"Yeah," replied Kirsty, almost sadly, "it was." I put my arm around her and she snuggled against my boob.