The shed

I move toward the shed, hearing more muffled noises from inside. I reach for the door handle and carefully open it, stepping inside. As my eyes got used to the dim light after the pool area lights, my eyes widened in surprise. Laying on one of the tables, my daughter Jo is getting fucked by my son, Hunter. She is naked with her bikini draped over the edge of the table, her full breasts wobbling with Hunter's exertion. She has her eyes closed as they fuck.

"Oh, Hunter. Your cock feels so good," you hear her say.

My mind is overwhelmed by my daughter being plowed by her brother. I should be protecting her, but instead, my cock is getting hard. Without a thought, I unzip and release the snake from my shorts. I stroke it to full size.

I look up from my cock and see Jo looking at me, mouth open in shock. Then her body is rocked by a big climax. Her eyes never leave mine as she shakes through the orgasm. I can't help it, I stroke faster and silently explode while she watches. Hunter grunts as he fills her up. Her climax intensifies. The shock leaves her face and she looks at me and grins, licking her lips. Then she turns back to Hunter and says, "That was so hot!"