I am a master mariner married to Ann. Ann has a younger sister, Dawn who is married to Colin. This occurred over 30 years ago in the late 1970’s when we were in our late 20's and I still had hair! I am 60 and my wife Ann 58 She is just over 5ft.5in tall, very slim size 6 with small 32b tits still firm and perky with slightly pointing upward nipples. Both her areolas and all parts of her nipples are tattooed with a Yin and Yang tattoo, she also had a third one about the size of a £2 coin done on her Mons pubis. After they had healed, she also decided to have both nipples and clit pierced horizontally with ball closure rings. Boy oh boy was this, and still is incredibly erotic, even now just thinking about I'm getting a hard on... Ann and I have four kids, one by me (our first), one by my brother-law (our second) and our last two by unknown partners. Dawn my sister in-law has three kids, the first one by me, the second one by her husband Colin and her third, like Ann by an unknown partner. Back in the late 1970's I was dating Ann. I worked at sea and still do; we had a courtship separated by many miles and time. In 1980 Ann and I eventually got married. After a few months ashore enjoying an extended honeymoon Ann announced she was pregnant and in due course our son was born. Ann and I had agreed before we were even married that what went on at sea stayed at sea and likewise whilst I was away what Ann got up to stayed ashore! After a period of sea duty as a result of a drunken run ashore I came home with a Prince Albert piercing! After the initial shock, Ann was really turned on by this and we fucked a lot. Ann was so turned on by my piercing this led to her getting her own piercing and tattoo's done! In the early 1980's whilst our son was still small, I came home for an extended period of 5 months shore leave, after the usual round of intense sex recovering in each other's arms Ann said that Dawn and her husband were having trouble conceiving and that they Ann, Dawn and Colin had come up with a plan as we had a proven track record in that department so to speak the plan was that over a weekend, we would swop partners to see what happened. I said I'd like to think about it. After the initial shock and sleeping on it I quite fancied having my way with Dawn my sister in-law, wondering what as Ann's younger sister her tits and pussy looked and felt like. After giving Ann my yes, we had to wait a few weeks until both girls were fertile, fortunately both Ann and Dawn menstrual cycles were within a few days of each other. We arranged for our son to spend a long weekend with his grandparents, with him safely out if the way, Dawn and her husband come over in the early afternoon. Over a glass or two of wine we agreed that any child would be brought up in the mothers house and that none of us would have intercourse with our proper partners over the weekend or until both girls had, had their next period. Sitting with Dawn on the sofa, I was feeling rather randy, my cock was semi hard, and I wondered what Dawn's reaction would be to my pierced cock. I started off by kissing the back of her neck and gently feeling her tits over her top and stoking her thighs, Dawn opened her legs so that I could raise her skirt up and move her knickers to one side so that I could finger her already wet pussy and play with her clit. From the other sofa, I heard a soft fucking hell from Colin, looking over to them I saw that he had taken Ann's dress, bra off with her knickers down by her knees, revealing her small pert tits with pierced nipples already which were already hard. Ann had loosely chained her nipple and clit piercings together with a decorative chain linking all three piercings via her ball closure rings in a triangle. Colin removed the last vestiges of Ann's clothing and started to kiss and suck on her nipples and play with her pussy and clit. Colin soon had Ann's nipples standing up like hard buttons, I could see him playing with her piercings flicking them up and down with his tongue, Ann was groaning as she pulled him off her tits and moved his head down to her pussy. Opening her legs wide, she held Colin's head tight into her shaven pussy. I could see my brother in-law licking and sucking her pussy gash paying attention to her clit and clit ring. From Ann's reaction the way her head and body were jerking I could see she was having a climax. After she had calmed down standing up, I could see her very wet and open pussy. I could also see from the large bulge in Colin's trousers that he had a massive boner. As I watched, Ann reached down and freed Colin's cock from the constraints of his trousers, with his cock springing up Ann started to wank and suck him off before stripping him completely. Still with his massive boner Ann got him to lay down on the sofa, straddling him and leaning forwards so that Colin could play with her tits Ann moved her labia up and down his hard rampant cock. I heard Ann moan and Colin exclaim yes, yes as his cock found the entrance to Ann's vagina and slipped his hard cock inside her. For the very first time I was watching another man fuck my wife. Colin began thrusting way, Ann was kissing him on the mouth, neck and chest, pushing herself upright, so that she was riding his cock to his full extent I could see them get into a rhythm. Colin was thrusting harder and faster, Ann started panting and groaning towards another climax. I heard Colin's yes, I'm cuming as his pelvis arched upwards, shooting his seed deep, deep into my wife's Ann fertile pussy. Ann stayed sitting upright as Colin continued thrusting into Ann's pussy to ensure that he gave her a full load and to bring her to her climax. As Ann reached her climax, she slumped forwards again onto Colin's chest, getting off Colin's softening cock she moved down to lick and suck it clean and as she did so she opened her legs and I could see my brothers in-law, Colin, spunk leaking out of my wife's vagina, dribbling down her open her open pussy lips towards her arse. Dawn had become very, very aroused by watching her husband fuck her sister, my wife. Dawn and I started French kissing and Dawn started to stoke the inside of my thighs. Standing up, I took off her top and bra revealing her wonderful petit tits and hard erect bullet like nipples. Bending down I kisses and nibbled on them, I undid Dawns skirt and dropped it and her knickers to the floor so she could step out of them. Dawn sat down and undid my jeans freeing my hardening cock, she went wow as she saw my piercing and asked did it hurt when I made love? Nope it only hurt when I had it done but it gives an intense heightened feeling during intercourse and when I cum I squirt out of three holes. Dawn started playing with my cock gently caressing and sucking it. Dawn laid back onto to sofa and opened her legs to show her neat, trimmed pussy. Dropping to my knees I started to lick, nibble on Dawn's pussy lips and clit, when she, Dawn, was nice and set I knelt up and began to tease my cock up and down her pussy lips and rub her clit with my glans. Dawn looked across to her sister, Ann's pussy still dripping Colin's spunk, she whispered fuck me, fuck me. I moved my cock to her entrance and thrust hard into her pussy. Dawns eyes sent wide as she felt my piercing moving about inside her as I plunged in and out, getting into out our rhythm Dawn clasped her legs tight around me pulling me in deeper, yelling fuck me harder, harder I could feel her vaginal muscles clamp down squeezing my cock as she climaxed. After a few more thrust I felt my cock swell as I reached my own climax shooting a good two weeks’ worth of my spunk deep into her pussy. After I softened my prick slipped out of her pussy covered in both of our love juices. Looking down to Dawns pussy I could see my thick cum leaking out from between her open lips. Dawn sat back up and cleaned my cock clean of our cum. Dawn and I looked across to my wife Ann and my brother in-law to see that Colin had got his second wind and was giving Ann a good fuck in the missionary's position, Ann had wrapped her legs around his legs as he thrust into her. We had a fantastic view as we watched his cock and her hole moving as one as he slipped in and out of Ann's pussy. As we watched we could see Colin thrust harder and faster into Ann's pussy, his buttocks tensed and with a grunted yes, he shot his second load of spunk deep into my wife's pussy again. After he got off Ann, I looked across to my wife to her open legs to see a fresh load of Colin's thick cum leaking out of her well fucked and fertile pussy.... The following morning after Dawn and I had, had a gentle leisurely fuck, I met Ann coming out of the bathroom, giving her a good morning kiss reaching down I fingered her pussy to find it very wet and full of Colin's spunk with his spunk running down Ann's thigh. I got a raging hard on, turning around went back into the bedroom Dawn and I were using and fucked her again until I shot my by now not so much spunk into her pussy. After we spent most of the fucking each other’s husband/wife, Dawn and Colin went home. I had a very sore cock and Ann was also rather tender inside. A few weeks later both Ann and Dawn missed their periods. Nine months later whilst I was at sea both Ann and Dawn had delightful baby girls a few days apart. Colin my brother in-law and Dawn were so pleased to find out that they were both fertile and eighteen months after my and Dawns daughter was born, they had a second daughter together.