You've taken the hottest women you've ever seen out on a date, talking the talk, all night telling her how your cock is the best she will ever have. She won't be able to handle your huge alpha dick. But now you're back at her place, and she is ready to see this amazing cock you've talked about so much. But when she pulls down your pants, feral for good dick, she stops, and laughs.
Because you don't have an impressive cock at all, do you. You have a small, pathetic dick, that no one wants to touch. You lied to her. She should kick you out. But she reveals a secret. She isn't who she said she was. She is a powerful goddess, a Temptress who shouldn't be provoked. She can do anything she wants to you. She's too powerful to fight off. As your punishment for having a little clitty and lying, she will turn you into a girl, limb by limb, starting from the top down, she snaps her fingers whilst grinding on top of you, and you transform. The last to go, is your miserable cock, it vanishes, leaving you with a pussy. And there's no going back. You'll be a women forever.