I’m Andrew, I’m 56 and married to a wonderful caring woman called Kelly who is 35. We had talked and joked about swapping for some time but I never thought it would happen until yesterday. We have close friends who will remain nameless, they started out as my wife’s friends but we quickly became close as couples. They are also married but much younger, I will call her Susan (19) and Alex (24). They are a great couple, funny and good friends. We have been on holiday together and had great times. Like my wife ‘Susan’ has an amazing body, she is very pretty, slim with small breasts. She has ling black hair and dark skin from her family’s Italian background. Kelly liked to joke about how she knew how to make me hard, just have ‘Susan’ walk into the room but to be honest, my wife does that for me anyway. She is also slim, bigger chest than Susan but perfectly formed. She has short blond hair and is much lighter skin with green eyes which complements her pretty face. There has been banter and flirtatious behaviour between the four of us for a while but nothing more than that but Kelly (my wife) announced last night that she had a surprise for me and that Her, ’Susan’ and ‘Alex’ had come up with the idea but that it was in two parts. My wife and I where alone and she wouldn’t give me any clues as to what the surprise was, Susan and Alex where not in the house so I assumed that they had contributed financially to the ‘gift’. Now, Kelly loves to tease in the bedroom so I was told to get undressed and lay on the bed, I did as I was told laying there with just my shorts. Kelly comes in wearing just her red silk short nightdress. She looked amazing, it is slightly too small for her which enhances her figure, her breast press against the silk and her nipples are prominent almost trying to push their way through. I was hard instantly and went to pull my cock out, but Kelly told me to behave and that I shouldn’t be in a rush so I put it away. My wife tied a scarf round my eyes which is our thing in reverse. We play a game where I blind fold her and tie her wrists together and pretend to be someone else as we fuck. I’ll fuck her hard pretending to be a stranger and she will beg me to be quick before her husband (me) comes home and its amazing. This time she blindfolded me tight, I had forgotten about Susan and Alex as I felt my wife pull my shorts down and wrap her fingers round my shaft and gently massage my hard cock. I felt her lips and tongue slide down my shaft. Then she pulled back and I could feel her moving around giggling, hands laying on my chest. She was straddling me, I went to feel her breasts, but she stopped me telling me to behave. Then I felt my cock sliding into a pussy, but it was different, my hands where held and raised and placed on someone’s breasts. Of course I expected them to be my wife’s, who else’s but these where small. My mind was racing, my wife pulled the scarf off, the first thing I saw was ‘Susan’ straddling me, my hard cock deep inside her pussy, a big grin on her face with my naked wife sitting on her calf’s next to her with an even bigger grin. ‘Happy birthday’ they said in unison. At the bottom of the bed behind my wife was ‘Alex’ , also naked, his thick but shorter cock standing at attention in his hand. Kelly asked if I liked my present, Susan’s pussy was sliding up and down my cock, her hands squeezing her firm tits, what’s not to like. I told them it was amazing and the three of them broke into big grins. Susan started to bounce a little harder, my thick shaft touching the sides of her tight pussy, she leaned forward allowing me to suck her tits, so small I could get them into my mouth whole for a nice hard suck which caused her to moan loudly. My wife crawled forwards, her slightly larger but juts as firm tits swinging as Susan’s husband climbed onto the bed and in moments guided his cock into my wife to start pumping her pussy. Susan lay her head down next to me, her ass raised with our friends thrusting away causing my wife to jerk forward with every thrust. The two girls moaning, Susan letting out whimpers every now and again. I wanted to fuck her hard so without letting my cock slide out of her tight pussy I slid her onto her back. She was as light as I expected her to be. I fucked her hard for a little while, her tongue tasted of mint but curiosity got the better of me. I slid my cock out of her amazing pussy and worked my way down her stunning figure giving her marble hard nipples and suck until I met her pussy. I sucked and tongue fucked her pussy hole which sent her into spasms. She was thrusting her self into my face so hard I had to hold onto her hips and hold her down. She started to beg me to fuck her called out to us all that she was coming. Alex had the same idea and my wife was unceremoniously turned and threw onto her back, and the two of us sucked on each others wives pussy’s lapping up pussy juice. Alex adding his fingers to his tongue. I was going to finger fuck his wife as well but she pulled me by my hair crying out ‘ I’m coming, please fuck me’. I did as I was told and rushed up her body stopping off to have a last suck of her tits before I rammed my cock back into her. She was so tight it took me two attempts but I was in. My wife was laying next to Susan begging Alex to cum insider her with chants of ‘cum inside me, cum inside me’. It was the hottest, most erotic sight I had ever seen, no porn video could come close to this. Susan was crying begging me to fuck her harder, not to stop and howling out that she was coming her back arching as I fucked her, her legs round my neck. And all the while my wife was demanding Alex cum inside her and telling him that she was ‘ready’. With that Alex filled my wife with cum, thrusting three, four, five times and groaning each time, each time Kelly begging him for more calling out ‘fill me, fill me then letting out a long deep howl that told me she was having her orgasm. That was too much for me, I was past the point of no return and I returned the favour pumping my own cum into his wife. Susan cried out and gripped me begging me to stop telling me that she ‘couldn’t cope any more as I carried on fucking. I stopped, I was out of breath in fact all four of us were. But the sight was too much for me and I was still hard and I wanted to carry on fucking. I was still inside her so started again, I gripped her hard tits and started to shag her again and again she moaned and cried. Alex wasn’t to be out done so he started on my wife again, bending over and sucking her tits whilst keeping his dick firmly inside her. I was going to cum again and I think Susan could tell but this time she wanted something different. I started to involuntarily grunt ready to shoot more cum into this gorgeous woman who was soaking in perspiration as where we all. Susan let out a cry ‘ no, in my mouth’. I pulled out just in time and managed to slide up her body just as cum shot out of my dick onto her tiny tits and her face. Her mouth was open so I managed to get a good amount into her mouth as per her request. Again Alex followed me and pulled out of my wife and as he did spunk shot out onto her belly and heaving tits. We were all soaking wet with perspiration and cum looking at each other hardly believing that we had just done what we had just done, the two women rubbing cum into their tits like moisturizer, giggling as they scooped up cum and fed it to each others mouths followed my a long deep tongue sucking kiss. We sat there exhausted and you would think that that was but no. Normally coming two or three times does it for me but I was hard again in a few minutes. I ordered Alex to unwrap himself from my wife. We swapped back and for the next 10 minutes or so fucked our own wives, I mixed my cum with his and he with mine as we emptied our balls into our wives. Now I was absolutely finished and after a few minutes to recover we partially dressed and went down stairs for coffee. Kelly had put n her nightdress which was now wet with cum, Susan just wore her knickers, her tits still wet with my cum whilst Alex and I had the decency to at least wear trousers. We were quiet for some time, to be honest, I had already said how amazing it was so couldn’t; think of anything to say. Thankyou seemed a but lame then Susan looked at her husband and said ‘that was fucking amazing, we have got to do it again’, he smiled and said ‘ok, but not tonight’. We all laughed and agreed, not tonight. After they left my wife an I showered and hugged agreeing that we needed that and agreeing to do it again. It was my wife who asked if we should try other couples and I said I would think about it. I asked her if she had anyone in mind, half joking. She gave me a big grin raised her eyebrows and said and said ‘Paul and Tania’. I let out a shriek, Tania is a size 16 ish, 5’2” if that with massive tits. Not exactly a looker, her husband is my age, not much taller than his wife and about 20 stone. ‘why the fuck would you want to shag them’ I asked. Kelly shrugged her shoulders and said ‘it would be different’. I told her I would think about it but they are definatly not into that sort of thing. She slapped my arse as we got out and said ‘yes they are, he’s desperate to shag me’. Apparently my wife and Tania had already spoken about it. The thought of fucking Tania is not on my list of fantasies. My wife however wants to find out what its like to be fucked by a 20 stone man. If I have my way she will never find out.