I could tell immediately that Carol had something on her mind when I got home from work. As we sat sipping our pre-dinner drinks she finally unburdened herself.
"Margaret rang today. She wants to come and stay for a few days. Do you mind?"
"So long as she's not going to go over the circumstances of her divorce yet again," I replied. Margaret was Carol's older sister and she had been involved in a rather acrimonious divorce six months ago.
"No, I think she's over that now," my wife replied. "Actually she's just bought a couple of new dresses which she wants me to alter for her."
"Oh, she's getting ready to put herself about again is she?" I queried.
"'Don't be unkind David she's been through a very tough time."
Actually, I didn't really mind at all. Margaret is a very delectable blonde, a slightly older version of my wife and the prospect of squiring the two of them was rather appealing.
"Actually darling, there is something else," Carol purred in the seductive tone she adopts when she wants me to put myself out. "Her car's broken down. Would you be an absolute dear and pick her up?"
"Why can't she come on the train?" I asked.
"I told you, she's bringing a couple of dresses for alteration and she doesn't want to crumple them up in a suitcase."
****
A few days later I found myself driving down the motorway with my sister-in-law sitting beside me and her dresses spread out on the back seat. We chatted for a while and then she reclined her seat and closed her eyes. Like many a man, I suspect, I have occasionally indulged in speculative fantasies about my sister-in-law's sex life. It has never progressed beyond an occasional brotherly kiss and cuddle but I confess to having sometimes contemplated the possibility of going further, particularly now that she was divorced. She shifted in her seat and crossed her legs revealing a seductive flash of thigh and stocking top. It almost felt like she was lying in bed next to me. I drove steadily on, sneaking occasional glances at her thighs. Her breasts moved gently beneath her clothing as she breathed in and out. My growing erection was beginning to make my crotch feel rather uncomfortable. I cautiously unzipped my flies and manoeuvred my cock into a more comfortable position so that it could expand more readily. As I did so Margaret suddenly opened her eyes. I hastily zipped up and put my hand back on the steering wheel but the bulge in my trousers must have been obvious. She glanced at me, moved her seat back into the upright position and adjusted her dress.
"I'm glad to see you don't wear those awful tights; they are real passion killers," I said, trying to diffuse the mutual embarrassment.
"You're supposed to be driving, not looking at my legs," she smiled, but it was clear that she was not displeased by my attention.
That evening after much sisterly chat over dinner, Margaret produced her new dresses for Carol's expert attention while I retired behind a newspaper. At some stage Margaret left the room to put on one of her dresses. When she returned; Carol busied her self with pins and tape measure. Eventually they were both satisfied.
"OK Margaret you can take the dress off now, I'll sew it up in the morning."
Quite forgetting that I was sitting there Margaret removed her dress giving me a delightful view of her lingerie before leaving the room to dress again.
Later that night, in bed, I snuggled up close to my wife.
"I see your sister keeps herself in very good shape," I whispered.
"Yes, I noticed you eyeing her up and I assume that's what's giving you an erection now!" Carol allowed me to remove her nightdress.
"But it's you I'm going to fuck isn't it? I murmured as I fondled her breasts.
"Well, no actually, I'm going to fuck you," she said decisively, as she flung back the bedclothes and straddled me.
Her movements as she wriggled herself into position before lowering herself onto my cock were a delight to watch. As she rode up and down I squeezed and kissed her tits. Soon she was gasping and sighing as I felt the tell tale spasms in her vagina which was the signal for me to erupt with orgasmic pleasure.
Next morning I woke early and went downstairs to make an early morning cup of tea for everyone. After taking a cup to Carol I knocked on Margaret's door and silently entered the room. She was half awake and as I approached she pushed herself into a sitting position which had the unexpected but delightful effect of pulling her nightdress off her shoulders and thus revealing rather more of her breasts than I would normally expect to see.
"Good morning Margaret, what a very stimulating sight," I joked, kissing her gently on the cheek.
It required a superhuman effort on my part to refrain from touching her breasts before she casually slipped them back inside her nightdress. I sat on the side of the bed and watched her sipping her tea and wondered if she was aware of the growing erection under my robe. She smiled and very casually placed her hand over the evident bulge.
"I think your John Thomas is in need of a little exercise isn't he?"
I leaned forward and kissed her on the lips and at the same time began to gently fondle her breasts through her nightdress. Her hand slid inside my robe and gently caressed my cock. I pulled aside the bedclothes and began to slide my hand up her legs.
"No David!" she ordered firmly and quickly released my excited member.
"OK" I conceded, "but please let me have another look at your beautiful tits." She pulled the bedclothes back up.
"Alright, but only look, don't touch," she instructed. I nodded in agreement.
As I watched she slipped her arms out of her nightdress and pulled it down so that her breasts were fully exposed. I exclaimed with a mixture of admiration and lust. The size, variety and shape of women's breasts are a constant source of wonderment and delight to me. I allowed my dressing gown to fall open so that she could see the extent of my arousal.
"My cock really does need a workout now." I pleaded. She smiled impishly.
"I suppose I can't really send you back to Carol like that can I? Hand me that jar of hand cream on the dressing table." I did as I was asked and watched as she unscrewed the jar and scooped out liberal portion of lotion.