Before my wife and I married, her parents decided to move to Florida. We decided to get married a few years later and got married there in Florida. My wife's little sister was always a cute bubbly kid about 8 years younger than me. She was always my best friend in then family. About a year after we were married and living in another state her parents decided to visit family in the state next to ours and asked us to come over for the weekend. Their plane was to visit there, then in a few days after we left to come visit us. When we left we decided to take my wife's sister with us so she could visit her old neighborhood. On the way back home, we kidded around, we both wanted to ride shotgun while my wife drove. My sister in law at the time was just 17, cute as a button with a really cute ass. She jumped in and sat on my lap. and we were wrestling for the seat, when I started to get a boner. To my surprise she said oh my, what do we have here. I turned red, she jumped in the back seat then my wife came out got in the car and we left. Nothing was said at all, very little was even said at all. When we stopped for gas, my wife went to the bathroom, and we were alone. I got done pumping gas and sat back in the car waiting for my wife when my sister in law, said wow, I know why my sister married you. I was perplexed and said what, she said "you know, your big dick", again I turned red again. She said "don't be embarrassed, you should be proud of your manhood". I just kept quiet. Now there was an awkward big elephant in the room, the rest of the trip home I sat in silence, thoughts of my wife knowing her sister gave me wood scared the shit out of me. It was a Saturday when we pulled in to our townhouse, we went in and my S/I/L asked if she could use my car to visit friends, I agreed and she winked at me as she left. On Sunday my wife was still going to college part time and had 2 classes on Sunday, she said she was leaving and my S/I/L said she was taking my car to see friends. They both left, I expected them to both be gone for most of the day. About an hour after my S/I/L left she returned with one of her friends, she wanted to show her friend where we lived. I was sitting in a pair of gym shorts and a wife beater just chilling, when they both went in the downstairs half bath, I thought it was odd, but who knows what 17 year old girls do. When the door opened, they both came out in panties and nothing else. They had a joint lit up and walked over to me and started trying to get me to smoke, I finally did and told them that they needed to get dressed. Both girls had phenomenal bodies and very nice round upright breasts. My S/I/L/ said come on show us your dick, i refused, but I must tell you it was beyond hard at this point. Then her friend came up and slid her hand under my shorts and grabbed my man hood, and said, fuck that's big. By that time I was just about to shoot my load, then my S/I/L came over and started stroking her friends pussy through her panties, when that happened, they girl got soaking wet and squeezed my dick so are I thought she was going to break it. IN no time we were on the floor with no clothes on, I reached down and started playing with her friends pussy along with my S/I/L. Trying to keep from touching my wife's sister, I was sucking her friends tits. The next thing I know the friend pulled her panties to the side and with one fail swoop, shoved my cock deep in her pussy, as I layed back I look up and there is my wife's sisters pussy about to come down on my face, shit it's gonna happen and I can't stop and really don't want to. I started sucking her clit with all my might while her friend his giving me one of the best fucks I have ever had. Pretty soon I was starting to cum, I pulled my cock out and shot my load up the friends belly and all over me. To my amazement my S/I/L leaned down with her pussy still on my face and began licking cum off of her friends belly. I tried to get up by my dick was quickly engulfed in my S/I/L mouth. As I sat there starting to get hard again in my S/I/L mouth I asked the friend if they had been together sexually, she said no but they had always wanted to be. I pushed them off of me and asked them to put on a show for me, and OMG what a fucking show it was,my S/I/L sucking hr friends pussy, her friend sucking her pussy, it wasn't long before I had another ragging boner. But this time I was fucking my very cute S/I/L. I fucked her doggy while she ate her friend pussy, then I got on my back with my S/I/L on my dick fucking me like a five dollar whore, and eating the tatsy pussy of her friend. I guess we must have fucked three times that day before my wife came back from class. that first encounter was 25 years ago, and we have fucked many times since. My wife works out of town a lot so, when she goes out, my S/I/L finds and excuse to get out of her house at least 1 day and we fuck like rabbits, she is still one of the best pieces of ass I have ever had, and her pussy still oozes honey when I eat it. She is trying to find her old friend to see if we can repeat the afternoon of 25 years ago. Dayum, I'm gonna have to call her as see if she can sneak out later, I need to taste that sweet slit of hers.