When mom got kidnapped and trained as a sex addict, I became her Medication. "A shudder went through Mom's body as she slowly parted her lips, letting me slip the tip of my thumb between them, feeling the wetness of her mouth, and then the tip of her tongue brushing against it."
A story of mis-understanding? Janice (Janie) and Jack have been married for a while. He asks for her to do something different then their usual missionary evening of sex. Their son Jeff, overhears a loud argument between the two, and decides to get involved. (codes will be added as necessary)
After Dad is killed, son takes charge as timid mom surrenders control. He eventually coats her vaginal walls with incestuous sperm and makes her his woman.