Is it cause and effect or just luck? A son ends up watching his favorite AV with his mother. The son can't help but get an erection. The mother is restless as she watches her son's state and the AV screen. Her maternal instincts overwhelm her reason, "You... now... don't you want to have sex?" She tells herself it's for her son's sake as she crosses the line. "My mom has become a woman right now."
