At last it was time! And I had the chance to have a brother-in-law all alone for me, as my stepsister and his mother were shopping in town. I did not hesitate long and got his cock out of his pants. My stepsister always raved about what a horny fucker he is and I wanted to test now. After I had blown his cock nice and hard, I pushed him slowly into my cunt. My sister was right. His rock hard penis massaged my clit so much that I had an orgasm after the others. But then suddenly my stepsister stood at the window and caught us