This story is absolutely true. It refers to actual incidents which happened a few days ago.
My name is Mike and I am 36 years old. I was at home one day when the phone rang and it was my mother-in-law who wanted to speak with my wife. When they finished, my wife, very upset, told me that she had to fly to her hometown to take care of a family/inheritance matter. The next morning I drove her to the airport and she promised she would be back in no more than a week. When I went to work Anthi, my sister, had left me a message to call her back. I did and she told me that her husband was out of town on a business trip and if me and my wife wanted to visit her and spend the weekend there, since she felt a bit lonely. Her 12-year-old daughter was already at our parents' and she only had her 3-month-old baby son with her. I told her that my wife had left already, but I wouldn't mind going to keep her company. She agreed and I said I would be there on Saturday morning.
Anthi is 34 years old, divorced and re-married. When we were kids we had fooled around a lot and experimented with sex since I was 12 (she 10) until I was 19 (she 17). We had never had actual intercourse, but I had given her oral sex many times (she hadn't), seen each other fully naked and played with each other's private parts for years. It was quite convenient since our house was small so we were sharing the same room. When we stopped it was because we were getting too embarrassed to ask each other and because we had left for different universities. There was a standard procedure we used to follow: one of the two would tell the other "Show!", the other would show (I was showing her my cock and she was usually showing me her pussy), and then the person who initiated the game would show back. Then I would usually go over to her bed, looking through the door's keyhole first to make sure that our parents had their bedroom door closed, and the real fun would start. Our favorite position was my sister lying face down, supported by her knees, and me behind her, fingering her cunt and eventually eating her. She loved it when my tongue was buried deep up inside her and she used to push and grind her dripping-wet pussy against my face so that my tongue would go even deeper. Even then Anthi had really big and heavy tits, a lot bigger and heavier than most girls her age and over, although she was never overweight.
I think the fetish I have for big and heavy breasts comes from that. Now, 17 years later, my sister's tits were even bigger and I would love to feel them and suck them again!!! I was thinking all these as I was driving to Anthi's town on Saturday morning and I had a massive hard-on!! I thought, who knows, maybe I 'd get my chance now, the one I had been expecting for years, to actually fuck my own sister!! When I arrived at my sister's she greeted me with a hug and a kiss on the cheek and then we went to see the baby. He was sleeping and Anthi asked me to keep an eye on him while she was going out to get some cigarettes. She told me to make myself at home and to pour some coffee from the coffee maker. Off she was and then I had an idea: I went to her dresser and opened the drawer to check her bras: 40DD!!! Wow, amazing! Then I went to the hamper and checked for her panties. I found some and I brought them to my face to smell her rich, feminine, musky aroma. I put them back and went for some coffee just as she was coming back in.
We spent most of the day slobbing around, talking, drinking coffee, laughing and playing with the baby. We had lunch and a little siesta and in the afternoon we watched some television. We couldn't go out because of the baby so I offered to cook. I went out to buy some stuff, meat and some bottles of wine. When I came back I prepared the meat and put it in the oven with roast potatoes, cut and prepared the salad and opened a bottle of wine. The bottle was finished when dinner was ready so we opened a second one. I served and we sat down to eat. I could already feel my head getting light and I assumed that Anthi was the same. We were talking and giggling a lot as we ate having a very good time. After dinner we changed to our pyjamas, I had a T-shirt and boxers and she had a nightie down to her knees, went to the living room, put some music on and started talking about the past. After a few good laughs and some dirty jokes I smoothly directed the conversation towards our childhood. In a while, as we were exchanging memories, I asked her straightforward if she remembered our old games: of course she remembered them, she said as she was laughing but I saw her blushing as well. Then it was the time to act: I gathered up all my courage and told her: "Show!!!".
It took my sister a few seconds to comprehend what I had said and when she did she almost froze and stopped laughing. Then, undecided, she tried to smile and asked: "You are kidding, right?". I said: "No, I'm serious!", enjoying myself with her embarrassment. She saw the sly smile on my face and she said: "Forget it!!!". Disappointed, I tried to laugh it off: "Come on, Anthi, why not? It will be fun! It's not like we haven't done this before, we 've seen each other naked many times in the past. No one is here, it will be between me and you as always. Besides, don't you want to see me after the circumcision? (I was circumcised five years ago and she knew about it)". I could see she had started giving in and boy, was I thrilled! Hesitantly, she mumbled "Well, O.K. then, but don't get any ideas, we will only see each other and that's it!!".
I should say here that probably nothing like that would have happened if it wasn't for the wine. It was definitely the alcohol that helped me find the nerve to ask my sister such a thing and also my sister react positively to my proposal instead of throwing me out of the house!! Before she could say anything else or change her mind, I opened the two buttons of my boxers and with my right hand I pulled out my swollen prick, which by then had grown to all its 9-inch length!! My sister's eyes opened wide and her jaw almost fell to the floor!! She was watching transfixed at my huge meat (I didn't remember it being so long and thick before), my big purple cock head and my sperm-filled hairy balls. "Well, Anthi, what do you think?" "Well, big brother, I 'd say they have done a very good job with your circumcision", she answered, when she eventually found her voice again. "Your turn now, sis", I said, leaving my fat cock out for my sister to see.
Anthi reluctantly spread her legs as she was sat in the sofa opposite me and lifted her nightgown. Her panties were black and very sexy. She slowly held the left seam with her fingers, exactly like she used to do in the "old days", and moved it to the side. I almost came then: her thick, black bush was neatly trimmed and her big, fat cunt lips were clearly showing. They looked wet and swollen and I knew she was as excited as me because this is how I remembered them to be when I had just fingered her as kids and I was going to go down on her. I thought "I have to fuck my sister tonight!!!". Slowly, I got up and walked to her. "Do you want to touch me, Anthi?". I asked, almost whispering. She looked at me with panic in her eyes as she said: "No, Mike, no, it's not right, we are not kids any more, we are both married, and you promised me we would only show!", but her eyes were glued to my manhood as she spoke. I approached her a bit more until my cock was about 2 feet away from her face. "Come on, sis, tell me, is it bigger than your husbands?" "Yes..." "Is it thicker?" "Yes..." "Does your husband eat you out?" "No, never..." "Come on, Anthi, touch your brother's big cock, I know you want it, you know you want it.". Very slowly, my sister extended her hand and her fingers touched my burning flesh: I had to grind my teeth and concentrate so I wouldn't come right there! Anthi's hand had gripped my manhood and was going slowly up and down, masturbating me! She whispered "Oh, God, this is so wrong, Mike", but she didn't stop for a second.
I could clearly see her erect nipples pushing the fabric of her nightie. Obviously she had no bra on. My hand, almost on its own, went slowly forward and grabbed my sister's left breast: Gush, it was huge! Anthi moaned softly as I started massaging her massive, heavy tit, paying special attention to her sensitive nipple. She made a weak effort to push my hand away, but I insisted and she eventually let me massage both her boobs. I sat on the sofa next to her and my left hand went straight away between her legs while the right hand kept squeezing her ample breasts. My sister kept stroking my meat but she tried to close her thighs: too late, my hand was already touching her underwear, and as soon as my fingers started caressing the satin outside she stopped trying. I told her: "Open up, Anthi", like I used to do in our "games", and she obliged, spreading her legs wide and giving me full access to her pussy. Then she said, trying to be firm:"Mike, you have to promise me something". "Anything, sis". "We will fool around awhile, but we will NOT have sex!!!" "O.K., sis, I promise", I said, hoping I wouldn't have to keep that promise!