One day afternoon I was watching porn in my mobile sitting in our shop since nobody was there. I heard a sweet voice “anna (brother)” and I was so...excited to see my darling standing there with nobody else around us.As I took the things she asked for one by one, I noticed she was keep controlling her smile. That’s when I remembered to hide the tent formed in my pant since I didn’t wear any underwear. I got embarrassed and went inside. I came back wearing the underwear. I found a naughty look on. However, I could clearly see what was on his screen. And I could also see his trousers and boxers around his ankles. I could also hear him panting, and a distinct slapping noise. I don’t know why, but it really turned me on. I’d honestly never felt like that before. I slid my dress up to I could reach my cock, and began stroking it. I was getting close, when I accidently grabbed the door handle, making a loud noise. Startled, my brother turned around and tried to cover himself.“Who’s there?!. Slowly, he inserted the rest of his large shaft deep inside her, stopping every inch to withdraw slightly, to prepare her each bit of the way. She displayed pain and pleasure on her face as he was careful with this technique, getting the entire length of his huge dick inside her pussy in a minute. Then he withdrew and re-inserted it. It felt fucking incredible to him. She was tight around his big dick and when he looked down he saw her pussy lips stretched around him. Sometimes he stopped when. John looked at me funny then said, "You know, this gang bang fantasy of yours sure has a lot of detail. It almost sounds like an experience rather than a fantasy."The look on my face must have given me away."OK, lets have it," John demanded.I tried to say something but nothing would come out. After a moment I burst into tears afraid that John would be angry and want a divorce. The whole story tumbled out at John's insistence. When I was finished I expected the worst from John but all he said.