Once more my sister was nude in front of me, but this time she wasn’t standing in front of an art class. This time she was laying on top of her cove...rs, sliding a small pink dildo in and out of her wet pussy. I could see her juice gleaming on the rubber cock as she moved it inside her with one hand and was pulling on her nipple with the other.“I didn’t think you were going to come over so I started by myself.”I gave her some cheese-ball line like; “Well, maybe we should finish together,” and. Every time we made eye contact with him, his face would turn beet red. It became a game as we wondered how long our little show could go on before he would finally go inside or join us. Our sunbathing went on every nice warm sunny morning just as this poor guy was running out of yardwork to keep him busy. Heck you cant mow your yard but so many times. Finally we decided to cut him a break and waved him over. I asked if he was interested in doing any yardwork for us. He jumped at the chance not. He went in the bathroom and looked at all of the feminine bath products cluttering every inch of the available shelf space. The disarray, all of it recent, told him that Kelly was going to spend the night tonight. Washing his face in the hope that it would help him stay awake, he considered his reflection in the mirror. His reflection looked two years older every Thursday night. He went to the door and stepped out of the house. Closing the door behind him, he set off down the street to Maria’s. Natasha, why don’t you eat my cum out of your little sister’s cunt now. I want to watch you swallow every drop that drips out.”I obeyed my father by lowering myself on the bed. Lying between my sister’s open legs, I licked her slit catching my Daddy’s semen spilling from it. His salty cum tasted sweet mixed with her cunt juices. I moaned delighting in the flavor of them both.Grandpa would come by then bringing along with him two adopted Rottweilers. They were big black male dogs that were.