"Well then Katie, since you wanted to be a diaper I'll see to it that you get put to goo use, I think Zoe could defiantly use you wouldn't you agree?" Tiff asks with a grin, meanwhile Katie wants to scream she wants to change back not be put to use as a diaper, she realized this was the worst idea she ever had, "well of course you do that way you change your self in to a girls diaper, I'm sure the experience will full your dirty fantasy," she finishes with a smirk. Then transports them to Zoe's room, only to find Zoe fussing over a wet diaper, "well it looks like were just in time Katie, Zoe's ready for you now aren't you excited, I know I'm." Tiff lays Katie down on the change table, at the front of the change mat, before disappearing from Katie view for a moment as she takes Zoe from her Crib, and lays her down in the middle of the change mat, Katie, is unable to do any thing but stare forward between Zoe's legs as she watches Tiff carefully unfasten the wet nappy and clean her sister up with a couple of wipes then fold the nappy in half before dropping it into the pail beside the change table, "well Katie it looks like she only wet her self this time, maybe she'll mess her self next time, I'm sure you'll enjoy that, you'd just love to have her unload a nice big load of her messy poo in to you wouldn't you?" laughs Tiff as she grabs Katie an and pulls her up between Zoe's legs spreading her out before quickly lifting Zoe's butt to rest on Katie's padded face, while Katie is helpless to stop the horror her best friend is about to put her through, then she thinks about why she chose to change try changing into a diaper, how shes always be fascinated with dirty diaper's how even just last night she'd sung in to Zoe's room to play this some of her diapers, but she'd only rubbed the out side of them against her face, sure she though about don't more but was too much of a chicken to try it, just maybe this wasn't some horror but a dream come true, but what about when Zoe was done with her what would happen then she didn't want to be just thrown out. While Katie had be thing about this Tiff had finished wrapping her around Zoe and fastening her in face, "Well have fun Katie, I'm sure you'll enjoy this more then your activities last night, you can't chicken out this time so you'll get to enjoy the full experience. Yes Katie I know all about your dirty fantasy." Katie is both shocked and horrified to learn that Tiff knows all about her interest in dirty diapers.