For the last few years my wife has been very aware of the very large and long buldge that her sisters husband has when ever we are around each other's company, it's always very visible and at times you almost see the shape of his penis depending on what material pants or shorts his wearing at the time, many times his worn bathers when we all have been at the beach together and he has made a big statement to all of us saying his the man and he was with a penis that size. Eventually me and my wife began role playing her being fucked by her sisters husband to make it more realistic we use a bigger dildo strappon and she goes wild and has multiple orgasms and just can't get enough. Now I'm aware we getting close that she wants to real thing and thinking about it now I think this is what he made happen either intentionally or not but his gifted nature sure makes an impact on other men wives who had the opportunity being around him often till it takes control on her thought and wants till she just wants what's hidden underneath his pants that she knows what's there it's obvious and curiously wants to see it then feel it and eventually let it enter inside of her pussy. Today we had lunch at my wife's sisters house with her husband and another couple. My wife told me that if and when she gets the discreet opportunity that she was going to hold his penis and grip it from the out side of his pants and finally feel it's powerful nature for real and see how he responds to her advance.At one stage he gets up to use the bathroom and my wife follows him not long after. As I was sitting at the dinning table with this other couple and my wife's sister we continued talking and 10 minutes had gone by when the brother in law came casually and sat at the table and joined the conversation and a minute after my wife appeared she was normal and i got the instant idea that he responded positive showed he was keen to fuck my wife who was his wife's sister. Eventually we decided to leave and in the car I asked my wife what had happened and she told me as he was walking past my wife in the corridore my wife grab and held his cock hard and started slowly rubbing it through his pants and she said he stood there till he got an erection and she got to feel his erection when he turned my wife and faced her against the wall and unzipped his pants took out his cock pulled my wife's skirt up pulled her pantie down and rubbed his cock inbetween her pussy and slide it up and down in between her butt cheeks. They didn't go further she said and that we now have to work out when he would be able to visit us without my wife's sister being there so my wife and he could fuck without being disturbed and proper in our bed. I got a very hard erection hearing what had happened and couldn't wait to get home and fuck my wife and she was very horny and wanted it very much. The ideal day is Saturday in two days and I'm very nervous that his going to come and fuck my wife in our bed and I was going to just watch or wait in the other room but the thought instantly arouses me and I'm certain I want him to also fuck my wife as often as he can and keep both sisters and me happy. Can't wait for him to take over my spot in our bed and enjoy my wife and fuck each other as they desire.