The mother warns her son, "This time it's anal only, okay?" The son replies, "Don't worry, I'm an anal specialist!" To avoid incest, the mother allows her son to use her anus. She thinks that as long as it's the anal hole, there's no risk no matter how much he releases. Caught between pleasure and ethics, the mother says, "If it's anal, you can let it all out!" and convinces herself, "He's been pent up... it can't be helped." She feels frustrated that she's being made to cum by her son, and through anal at that. Even though they both know it's wrong, it feels so good their minds go blank. With exchanges like, "Ah, that hole is my pussy!" and "The hole a little lower is the anus," the story depicts the conflict of knowing this is wrong between parent and child, feeling frustrated... yet still getting aroused!