Nikki has been obstinate about messing her diaper, so Step-Daddy has put her into a pair of locking plastic panties. When her bowels have been uncomfortable and she desperately needs to empty them, Step-Daddy stands over her as she struggles to fill her diaper. Once she has done her business, Step-Daddy enforces the humiliation of a messy diaper by paddling her right on her messy bum. Now she will sit in her own mess until Step-Daddy is ready to change her.