Janet and John/Mummy
"John is worried about his little sister. See John looking in the woods."
"John gives up and goes back to find Daddy. See John's face when he sees what Mummy and Daddy are doing."
"See Daddy on top of Mummy. See his bare bottom."
"See John getting excited watching Daddy and Mummy fucking. See his cock get stiff again."
"Do you think John wants to fuck his Mummy?"
"Hmm... Probably, but remember, it's only a story."
"See Daddy roll onto his back beside Mummy. Why do you think his cock has gone soft?"
"I think he just cummed."
"See Mummy laying in the sun with her legs apart. See how her pussy is all red and shiny."
"See John standing where he can get a better look. See how his shadow wakes mummy up."
"See Mummy hold her arms out for a hug."
"See how John lays on top of Mummy with his cock squished against her pussy. See how Mummy wriggles about so it goes inside."
"See John fucking his Mummy. See Daddy watch and smile."
"See John climax and flops on top of Mummy."