Wife and her brother

I came home to pick up some things that I needed for work that I had left earlier in the day. When I walked into the door I heard the shower running. I knew that meant the wife was taking a shower. I figured this would be a good time to do some peeking. I have a peep hole into the shower that gives me a great view and I have used it to see some very interesting moments. 

When I peeked in I relized that she wasn't alone in the shower. At first I couldn't tell who it was in the shower with her because his back was too me but it was plain to see they were having a great time. She was kneeling in front of him sucking his cock. I heard her say " its so huge". then when I heard his voice I was shocked but turned on also. It was her brother that was in the shower with her. 

She stopped and smiled up at him and said I have to have it in me. She stood up and they turned and I was shocked to see the size of his monster. It had to be at least 12" long. She bent over and she got behind her and guided the head to her opening. Slowly he slid into her but when it was about half way in you could tell she was getting stuffed. Slowly he worked it back and forth and the more he did the more she begged and moaned. 

She kept telling him " more, more I want it all". After several minutes he finally had the whole thing buried deep inside of her womb. Once it was all the way inside she started cumming almost non stop begging him for more. He began to pump in and out of her slamming his long huge hard cock deep into my wife's, his sisters hot throbing pussy. As the pace quickened you could tell he was getting closer and I knew he would soon be cumming just like his sister. 

As the moment neared I just knew he would be pulling out that huge monster and spaying his hot cum all over her sexy ass. Suddenly he slammed it deep into her and I heard her let out a scream and I knew he was in fact cumming deep inside of his sisters hot pussy. At first I was a little shocked as I was sitting there stroking my hard cock but then I realized how hot it was knowing he was filling her hot fertile hole with his cum. 

And I could hear her begging him to keep filling her. I heard her tell him " pump that hot seed in me. Let me feeling deep in me. God it's fo fucking hot." Knowing that she was getting filled with her brothers hot cum and that she was not using any birth control and that her brother could be impregnanting her suddenly made me cum harder than I had ever cum. 

After I came I quickly cleaned up and slipped out of the house before they knew I was there. When I came home that evening I didn't let on that I had seen anything. But seeing her walking around and knowing that her brothers cum was burined inside of her was a huge turn on knowing that at that very moment she may actually be pregnant with her own brothers baby.