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Swapping My Wife for Her Sister
by Guru on a Hill (no address provided)

***

A day of drinking leads to an unexpected wife swap. (MF, 
nc, swinger)

***

My wife Sarah and I have always had a good sex life. 
Both of us were in our late 30's and we routinely had 
sex three to four times a week even after having two 
kids. Standing at 5'1" with dirty blonde hair and light 
blue eyes Sarah's body was quite sexy for a woman at any 
age. On occasion Sarah and I would role play and one of 
our role playing scenarios involved her pretending to be 
her younger sister Catherine. This scenario was by far 
my favorite as I often would find myself jerking off 
thinking of having sex with my sister-in-law.

One night my wife and I were over at Catherine's house 
celebrating the construction of her new pool with her 
husband Tony. It was a hot and humid July day, perfect 
pool weather. The four of us started drinking sometime 
in the mid afternoon and sometime after sunset the 
combination of sun and alcohol had given all of us quite 
a serious buzz.

All day I had found myself looking at Catherine in her 
little black bikini. Catherine stood about 5'4", had 
dark brown hair and brown eyes. She had given birth to 
twins a year earlier which caused her breasts to go from 
an average B cup to a full D cup. Somehow Catherine 
managed to keep those large tits while losing most of 
her baby weight. With her full hips, and firm lean legs, 
this had been the first time in two years that Catherine 
had worn a bikini and as a result of her top being a too 
small, her tits looked like they were ready to burst out 
at any given moment.
 
As the night went on and the liquor kept flowing, Sarah 
had mentioned how nice it was that her parents had 
agreed to take all of the kids for the night and that we 
were all free to enjoy ourselves. Because of our freedom 
we found ourselves drinking more than usual and even 
found ourselves playing drinking games. One of the games 
we played was, "I never ever…" Simply put the game is 
played by someone saying something like I never ever 
flown on an airplane. Anyone that has flown on a plane 
drinks.
 
When it came to my turn to ask the question, I said, "I 
never ever (with the exception of porn) watched two 
people have sex." 
At this point Tony takes a drink. Catherine turns her 
head towards Tony, her mouth wide open, her words 
beginning to slur, looks at her husband and says, 
"WHEN?!"
 
Tony goes on to tell a story about when he and his 
brother and sister-in-law went away a few years ago, how 
the two of them thought Tony was asleep and how they 
tried to quietly fuck without waking him.
 
Catherine, still shocked says, "Is that why you came 
home horny as hell from that trip? I thought it was 
caused you missed me?"
 
Tony looks at her and says, "Don't complain, I seem to 
remember you cumming three times that night!"

"So if we were to fuck right now I would be doing my 
sister a favor because Frank would fuck her as good as 
you fucked me that night?" Catherine asked in what 
seemed to be a joking manner.

As Tony shrugged, as if to suggest she was correct. 
Although the tone Catherine was using sounded sarcastic 
something told me that this could possibly happen and I 
quickly chimed in, "Yes and Sarah would thank you for 
several weeks to come."

At this point, Catherine bluffs and says, "Let's do it!"

Tony calling her bluff stands up and says, "Ok."

After what seemed like an eternity of me holding my 
breathing hoping that this would happen, my normally 
conservative and overly shy sister-in-law, still 
sitting, removes her bikini top revealing those 
beautiful tits I had been admiring all day. At this 
point my cock comes to life and by the time Catherine's 
top hits the floor my dick is fully erect. Tony follows 
his wife and drops his trunks; however the alcohol must 
have really been taking its toll on him because his dick 
was only half erect. Taking a step closer to Catherine, 
she grabs his half erect shaft in her hand and wraps her 
full red lips around it. Both sitting in stunned 
silence, Sarah and I just watched as Catherine's head 
bobbed up and down on her husband's cock as she tried in 
vain to get him hard.

After a few minutes of watching this go on, Catherine 
takes Tony's cock out of her mouth, looks at Sarah and 
says, "You want to give me a HAND with this thing?"
 
Sarah looks at me and I quickly nod for her to do so. It 
didn't take Sarah too much convincing because as soon as 
I gave my approval, she was up on her feet and over to 
them almost immediately. Even before Sarah wrapped her 
well manicured fingers around Tony's member his cock 
started springing to life and after only a few strokes 
from my lovely wife, his cock was fully erect and ready 
to go. At that moment, I knew that Tony wanted to fuck 
Sarah as much as I wanted to fuck Catherine and judging 
by how quick my wife had grabbed Tony's cock, she wanted 
to fuck him as well.

Once Sarah released Tony's cock from her hand, Tony 
leaned Catherine back on the deck chair, spread her legs 
and slid his throbbing member into his wife's eager 
pussy. I had the perfect position to watch as Tony's 
back was to me, Catherine was on her back, her legs 
spread with her hands holding behind her knees and her 
feet up in the air. I could clearly watch his cock slide 
in and out of Catherine's beautiful pussy.

As I watched Catherine getting fuck by her husband, my 
balls were screaming for me to release my load. After 
stroking Tony's cock, my wife had taken a couple of 
steps back and just stood there watching her sister 
getting fucked by her husband. This went on for a few 
minutes and just as I was about to stand up, grab Sarah, 
rip her bikini off and begin savagely fucking her to 
satisfy my own desires I heard Catherine say, "No. Don't 
lose it."

I looked back towards Catherine and Tony and while Tony 
was still pounding away at her pussy, I noticed that his 
cock was beginning to soften again. At this point, I 
whispered into Sarah's ear, "Why don't you fuck him 
instead of giving him a couple of tugs? If she can't get 
him off, maybe you can."

A little shocked by what I had just said Sarah leaned 
away from me and said, "Are you sure?"

I nodded and said, "I've always told you I wanted to 
watch another man fuck you, now's my chance."

Quickly, Sarah stripped off her bikini top revealing her 
perky B cup tits and I watched her taught full ass 
appear as she stepped out of her bottoms.

Half drunk and not realizing that Sarah was now 
completely naked behind him, Tony turns his head to the 
side and without completely looking towards Sarah, says 
to her, "Do you mind giving me a hand again?"

At this point Tony turns around to see Sarah completely 
nude as she replies, "I've got something better for 
you."

Sarah walks over to another deck chair and with her back 
to him, gets on her knees and elbows so her head is just 
a few inches from the seat and her tight little ass is 
elevated right in front of Tony. As I stared at my 
wife's ass and her yearning pussy, I noticed how her 
pussy juice was forming little drops on her sparse pubic 
hair. Sarah briefly wiggled her ass in front of Tony 
before turning to look at him over her shoulder. Sarah 
doesn't say a word. She just gives him a, "Fuck me" look 
that I've never seen her give before. His cock, no 
longer having problems getting hard, Tony turns from his 
wife and takes a step towards Sarah.

Grabbing Sarah's shoulder with one hand and using the 
other to grab the base of his cock, Tony slides it into 
Sarah's waiting juicy fuck hole. Balls deep in my wife, 
Tony pauses to enjoy Sarah's sweet little sex pot. At 
that moment she begins to push back and gyrate her hips 
ever so slowly at first. Tony moves his hands to grab 
Sarah's hips while thrusting his cock even further into 
Sarah causing her to gyrate a little bit faster and 
causing her to let out a sharp little, "Ugh!" 

Looking at Sarah's face, I could see she was in pure 
ecstasy. Her head was looking down and her mouth was 
open as if she wanted to moan, but the sheer pleasure 
she was feeling had somehow stolen her voice. Based on 
my many experiences with her in the past I knew it 
wouldn't be long before she would cum. 

Tony, also sensing that Sarah was close to cumming, 
would pull his cock back ever so slightly and then ram 
back in each time with a forceful, "SLAP!" Unable to 
make a sound, Sarah continues to gyrate her hips faster 
and faster. Her voice came back to her as she began to 
moan, "Oh! Oh! Oh my God! Your hard cock feels so good! 
Give it to me just like that!"

Not long after, Sarah's head snaps back, her body 
tenses, her eyes open wide, looking straight ahead she 
screams, "OH MY GOD! I'M CUMMING! UGH!" Her toes curl 
and her fist clench, Sarah's pussy clamps down on Tony's 
cock like a vice. While Sarah is cumming Tony quickly 
moves his hands from her hips to her shoulders and uses 
his right knee to push Sarah's legs further apart, 
allowing him to sink his rigid tool even deeper into her 
tightening love box.  Sarah then slowly lowers her head 
and her body goes limp. Breathless, the two paused for a 
second to allow Sarah regain her composure.

While all this was going on I was using my thumb to rub 
my raging hard on through my swim trunks. I briefly 
thought about pulling out my cock and rubbing one out 
right there, but this was the first time I'd ever seen 
another couple fuck right in front of me and since my 
wife was part of that couple I figured I'd just as well 
fuck her once Tony was done. Then it came to me, 
Catherine was still there! 

I was so busy watching this other guy fuck my wife that 
I had briefly forgotten about her. I turned and looked 
over at her sitting on the deck chair that her husband 
had left her on. She seemed to have a different frame of 
mind about the whole situation. She had a stunned 
astonished look on her face as she watched her husband 
fuck her sister right in front of her. 

Neither one of them had asked her if it was ok and 
neither one of them cared if it was ok, they just went 
and did it! I looked at her face and for a split second 
I felt a little bad for her, but after that split second 
I looked at her gorgeous flowing brown hair, then her 
beautiful brown eyes and then I focused on those full 
soft lips. 

My eyes moved downward and I gazed at her full D cup 
tits that I had been staring at all day. My cock jumped 
in my shorts and all thoughts of pity quickly dispersed. 
My eyes then took a long look at her long lean legs. I 
thought to myself I've jerked off to this girl many 
times and if I was ever going to get a chance to fuck 
her it was now or never.

I was certain that Catherine saw me gazing at her out of 
the corner of her eyes; however she didn't return the 
look. Her eyes stayed focused on her husband fucking her 
sister. I looked back at Sarah and Tony. She was now on 
her back with her legs spread wide with Tony on top of 
her rapidly ramming his cock in and out of her pussy. 
His balls were slapping against Sarah's ass with a 
frantic FWOP FWOP FWOP sound. 

It was Tony's turn to grunt with pleasure as Sarah's 
pretty blue eyes focused on his long lean body ramming 
away at hers. Knowing that the two of them were busy at 
the moment, I knew this was my chance to act. I stood 
up, quickly stripped off my swim trunks and walked over 
to Catherine. 

Approaching her from the side, I knew she saw me, but 
she didn't turn to acknowledge me until I was about a 
step away from her. When she finally did turn to look at 
me, her big brown eyes were at the same level as my 
cock. Slowly her gaze turned upwards from my cock to my 
chest to finally she was looking me in the eyes. 

In one sudden move, I grabbed her, squared her to me and 
pushed her back onto the deck chair in which she was 
sitting. Offering some resistance to my advance, 
Catherine initially tried to verbalize a protest as a 
muffled, "NO!" tried to come out; however I quickly 
kissed her to ensure I wasn't interrupted by her husband 
or sister. Using my chest to pin her down and while I 
was still kissing her, I quickly positioned both my 
hands on the underside of her knees and spread her legs 
as far apart as I could. 

In the next instant, like a trained sniper hitting the 
bull's eye I drove my cock deep into her pussy. 
Catherine's pussy wasn't as wet as I would've liked it 
to be, in fact when I initially drove my cock into her 
she flinched a bit, but I didn't care. This is the pussy 
I had craved for so long and I was in complete bliss.
 
After I slid my cock back and forth in her a few times, 
I pulled my mouth away from hers and looked over at Tony 
and Sarah to see if they were still keeping each other 
preoccupied. Tony was ramming her even more furiously 
now while my wife was encouraging his assault. 
"Fuck me Tony! Fuck me good and hard!" Sarah moaned. 
"Fuck my pussy like you've wanted to for all these 
years!"

At that moment Tony tensed up, let out a loud, "UGH!" 
shooting his jizz deep into Sarah's tight little cunt.
 
I turned my attention back to Catherine; my rigid cock 
was slowly going back and forth inside her. She was 
lying still staring ahead blankly with a defeated look 
on her face, betrayed by her husband and sister and now 
being forced to fuck by her brother-in-law, Catherine 
offered no further resistance. Although my balls were 
begging for me to blow my load immediately, I wanted to 
make this last and I wanted to see if I could make her 
enjoy it whether she wanted to or not.

Whispering in her ear I said "spread your legs some more 
for me Cat." She complied.

This allowed me to further penetrate her pussy. "God 
you're so much tighter than Sarah. I often imagined 
you'd be tighter than her, but not this much tighter." I 
whispered into her ear.
  
I saw a look of discomfort come across her face as I 
rammed my cock deeper into her. Holding still for a 
couple of seconds while I loosened her up, I pulled back 
and then slowly rammed my cock back into her again and 
again. This started to have the affect I was looking for 
as Catherine's pussy became more and wet with each 
thrust. After a few minutes of this, I whispered in her 
ear, "I want you to pinch my nipple with one hand and 
use your mouth to suck on the other one."

Catherine begrudgingly complied with my request as I 
felt her lips wrap around my right nipple, her tongue 
darting in and out of her mouth, while her hand gently 
pinched my nipple. I was in shear heaven. Not only was I 
fucking my beautiful sister-in-law, she was doing 
whatever I told her to do. I also have to admit, the 
fact that I was in complete control and that I didn't 
have to worry about any consequences from my wife or her 
husband turned me on even more.

Not long after Catherine began playing with my nipples, 
she began to bring her legs closer together and again, I 
told her to spread them. She did, but eventually she 
would begin to close them again. I finally got fed up. I 
grabbed the underside of both her knees, pushed them as 
far apart as possible and began to ram her harder. 
Catherine lips detached from my nipple as she let out a 
little whimper, but at the same time her pussy was now 
soaked and I felt the juice from her cunt running down 
my balls.

Catherine was trying so desperately to not enjoy what 
was happening to her, but each and every thrust was 
causing her the slightest bit of pain and a whole lot of 
pleasure. Catherine's body began to betray her more and 
more and looking at her face, I could see in her eyes, 
pleasure was beginning to overtake her and she hated 
herself for it. 

She was on the verge of cumming as her pussy continued 
to get wetter and her breathing began to quicken, 
however my balls had just about enough of holding out 
and they were demanding to release their load. Just as I 
felt I could no longer hold off on blowing my load, my 
wife kneels down next to her sister, looks up at me and 
says, "Cum all over her tits and I'll suck it off of 
her."

At that moment Catherine bites her lower lip, her eyes 
roll back and her hands instinctively grab onto my hips 
pulling my thrusts even deeper into her, she lets out a 
loud, "UGH! OHHH! Holy shit!" She was cumming as hard as 
I've ever seen any woman cum before. I briefly stop my 
ramming her to watch her sexy little body tense up while 
her tight little cunt grabbed a hold of my cock like 
it's never been grabbed before. 

A few seconds later I resume my ramming. Feeling my 
balls beginning to tighten and my load ready to spew, I 
scramble up Catherine's chest, and go to straddle her at 
about her sternum. Sarah quickly grabs my shaft and I 
hear her order her sister, "Squeeze his balls Cat! 
Squeeze his balls!" 
 
Catherine quickly complies with her sister's orders and 
as I settle onto her, I feel Sarah's delicate hand 
firmly stroking my rock hard cock and her sister's soft 
delicate hand cup my tightening balls. Looking at 
Catherine's beautiful face while she's looking at my 
cock, I erupt like the volcano that destroyed Pompeii. 

I start by spewing thick loads of cum that completely 
bypass her tits and land on her chin and cheek. While 
continuing to expertly stroke my cock, half way through 
my eruption, my wife angles my shaft down some more and 
I continue to cum all over Catherine's luscious tits. 

True to her word, Sarah sucks up every last drop of my 
seed off of Catherine's tits. When she finishes with 
herself appointed task, she then takes my cock into her 
mouth and completely cleans it off of any leftover jizz 
and the left over coating of her sister's salty beaver 
juice.

Once the moment had passed and none of us where horny 
anymore, the four of us weren't really sure what to say 
to one another. We sat there briefly in an awkward 
silence. I got up, trying to break the silence telling 
everyone, "I'm going to get another drink. Anyone want 
one?"
 
To which Tony replied, "Actually, I've got some Viagra 
upstairs. Do you want some of that instead?"

I coyly looked over at Sarah to see what her reaction 
would be. Her face lit up with a big beautiful smile as 
she looked over at Catherine to see what her reaction 
would be, to which she replied, "Fuck yeah! If I'm going 
to cum like that again, let's do it!"

END

* * * * * * * * * * * * * * * * * * * * * * * * * * * *
It's okay to *READ* stories about unprotected sex
with others outside a monogamous relationship. But it
isn't okay to *HAVE* unprotected sex with people
other than a trusted partner. 4-million people around
the world contract HIV every year. You only have one
body per lifetime, so take good care of it!
* * * * * * * * * * * * * * * * * * * * * * * * * * * *
Kristen's collection - Directory 81