[M]Doggy style with [F]sister in law

TLDR : Wife let me relieve my morning glory in her sister from behind.

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**Preamble**

It would have been about a month before I got some more action with my [M45] wife’s [F45] sister [F43] Kate and my first fuck with her. (Check out my other stories for the back story)

It was a Saturday morning and I was lazing in bed toying with my morning glory while Jane was getting ready to go out shopping. She saw the slow rise and fall of the duvet and said that Kate was on her way over to go shopping with her and perhaps she might like to pop up for ‘breakfast’.

This got me really excited. I could feel my cock stiffen to full attention. I gripped it firmer and rubbed a bit quicker only stopping just as I reached the point of no return. I felt a dribble of precum ooze out and run down my helmet. I held the duvet off my throbbing dick to prevent any further stimulation. It was difficult not to start up again. My balls were desperate to be drained.

10 or so minutes later the door bell rang. Jane by this time was ready and in the spare room sorting out the washing. She called to me to answer the door for her. I slipped out of bed and grabbed my big T shirt. It’s so big my wife often uses it as a night gown and is usually dumped on the bed post. I pulled it on. It covered my butt but my erection, although concealed, formed the material into the bow of a boat pointing out in front of me.

I checked through the frosted glass it was indeed Kate before I opened the door to her. She quickly notice the prominent profile of my appendage.

“Someone’s pleased to see me,” she smiled.

Jane shouted down the stairs. “I’m busy for a minute, could you help him out?”

Kate pushed passed me as she entered the hall way, purposefully brushing across my cock, dragging the fabric off of it exposing it for her to see. The t-shirt hung either side of it like dropping puppy dog ears.

“He certainly needs help,” she called back.

I led her upstairs. Jane smiled as she glimpsed my hard cock sway from side to side like an inverted pendulum as we walked past the spare room.

**NSFW Good Bit**

In the bedroom Kate was quick to undo her jeans. Her enthusiasm was such a turn on as well as the no messing I want a fuck attitude. No kissing, no small talk, just get me off swagger.

She kept her shoes on and just pushed them down to her ankles, turned an knelt on the bed and lent forward on to her hands.

“Jane tells me you like it like this.” She said.

I moved up behind her and pushed my cock against her butt cleavage. I reached to her hips and grabbed the narrow waist band of her knickers. I pulled them back and down over her thick thighs. The black G string slowly peeled out from between her ass crack. I watched it emerge. The thin material started to widen out to the triangle that covers the pubis. I could see whitish stains where her thick pussy lips had been eating the lacy fabric.

I reach my hand in between her legs rubbing her inner left thigh, my index finger dragging across her inner labia that hung down. I pushed my hand forwards to feel her clit. It was nice a firm. As I started to work her clit with the edge of my finger I sunk my thumb into her pussy which seemed to eat it up. Her pussy was hot and wet. My thumb could feel the ridges of her vagina as I pushed it against the front wall squeezing her pubic mound from inside and out between my finger and thumb.

Her ass was rocking in time with my motion. With my other hand I grabbed her left cheek and push it to one side exposing her tight pink ass hole. I wondered if she liked anal, but considered that a step too far with the wife in the next room. I had never had anal with her so I am sure she would be too pleased.

I continued to thumb fuck her which seemed to be getting her excited. She started to groan with if stroke of her clit. I was mesmerised by her large labia. I loved the way it swelled at it engorged with blood. I admired how the inner lips hung down and flapped against my hand.

Her breath quickened and the groaning increased as I upped the pace. She was gripping my hand quite tight between her thighs as I massaged her wet pussy. I slid my other hand over her ass placing my thumb onto her inviting ass hole. I gently patted it with the tip of my thumb before moving it down onto the flesh between her holes. She responded favourable. I moved it further down to gather some of her warm white juice and returned to rubbing her perineum.

I started to assume she liked back door fun as she was really writhing from my toying. I slipped my wet thumb back up to her ass an applied pressure. I was about to push it in when she shuddered in orgasm, her thighs gripping even tighter on my right hand and I watch as her ass clenched with each wave of pleasure.

My right hand was soaked. I slipped it out causing her to shudder again. I couldn’t help myself from savouring the flavour of her thick creamy nectar. By this time my cock was a throbbing dribbling mess. She widened her legs for me inviting me in. I was tempted again by the tight ass but was compelled to experience her gaping pussy. I hadn’t had penetrative sex for a few years due to the wife’s condition and wanted to feel a warm wet pussy on my cock.

I held it down to get the angle right and pushed it into her. It was so good to feel it slide easily and all the way in to her welcoming hole. I loved to loose sensation allowing me to slide the entire length of my cock in and out of her. I took it slowly at first savouring her lips rubbing on me. I know I am not the biggest guy in the changing room but she was taking the full length and I was barely touching the sides. I was glad I had already made her cum as there was no way my 6” was going to satisfy her. But she was certainly going to satisfy me. I soon could feel my balls building pressure and tightening. I tried to hold off as long as possible but felt the impending eruption building.

It quickly crossed my mind that I shouldn’t cum in her, but she must have known I was close to climax and she didn’t move away, in fact she was positively pushing herself onto my cock and my pumping rate increased.

I gripped her hips and pulled my self up close against her as I felt my load shoot up my cock. I could feel my pussy tighten on my dick making it shot again. She was milking my cock with her pussy. It felt fantastic. I had never experienced this before. I could feel her contract and release her pelvic floor extending my orgasm until my legs were a quivering wreck.

Totally spent I pulled out and a string of fluid, a mixture of cum and pussy juice, clung to my softening cock and her hanging labia. I reached out to the side of the bed a grabbed some tissues.

“Hold on,” she said.

I watched as she clenched her crack and squeezed out a cream pie. She was such a dirty bitch. I loved it. Just as the gooey mess started to dribble down her inner thigh, I reached in wiped it off for her. Never say I am not a gentleman.

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Source: reddit.com/r/gonewildstories/comments/b6i1kt/mdoggy_style_with_fsister_in_law