This was a lot of years ago, my wife's sister came to live with us the summer after she graduated from high school, before she started college. She is much different than my wife. My wife is tall, slender, very fit with abs, and nice small tits, where as her sister is average height, big ass, and big tits, but not even a little fat. Anyway, I would have been about 26 at the time.

She was always kind of a bitch, which didn't sit well with me since she was staying for free in our home. One day was the final straw, I was getting ready to go take a shower, so I stripped down in my bedroom and wrapped a towel around myself. I stopped and turned the shower on as I went to get some shirts from the laundry room. That's when I had found that rather than put our wet clothes from the washer into the dryer, she just took them out and threw them in the basket, so she could do her own laundry. I stormed back down the hall yelling at her, still just in my towel. When she opened her door she seemed pretty surprised, and frankly, I probably went too far when I said if that's all the respect she had for us, she had to find a new place to live. I figured that was the end of it, so I went on to my shower.

Not long after I got in the water, I heard the door, which surprised me since my wife wasnt home. Thats when I heard her saying how sorry she was, and really didn't want to move out. I was not actually going to force her to anyway. I told her it was fine, and it was inappropriate that she was in the bathroom while I was showering. That's when out of nowhere she stepped through the curtain, totally naked. I had never seen her even a little bit undressed prior to that. She said "I feel like I need to show you how sorry I am". I initially protested, however she stepped forward and grabbed my cock, which was already starting to plump up. I was immediately rock hard, as she stroked me. She commented that she was bigger than she expected, which was nice to hear. I reached out and started playing with her tits, they were much firmer than I expected. It wasn't long and she was on her knees, trying her best to get all of me in her mouth. She kept gagging, but honestly, the effort made it even hotter. Finally I pulled her up from my cock, and lifted her up, one leg in each of my arms, and lowered her down on my cock. She wasnt tight like my wife, but felt so so good anyway. I pushed her against the wall while still holding her up and fucked her fast and hard, harder than I normally would, I had some frustration to get out, and she knew it. She had a couple orgasms, and I told her I was close to blowing. I set her down and she jerked my load out onto her face and down onto her big tits.

She got up and walked out with my load still on her face, while I finished my shower. When I got out and was getting dressed, I got a message from her, it was a picture of my cum all over her face that said, please daddy, I hope you'll let me stay.

We never spoke of it again, and she never did anything like it ever again.