"Hello Jeff, now just how did you end up all tiny and in my diaper naked?" she giggles, "What would mum say, about you playing around in my panties?" she finishes with a evil grin.
"If you say any thing to mum I'll tell her all about you wearing diapers" he threatens, "I'll tell her all about the things you do with them."
"And just what would you known anyway?" she challenges him, as she considers what she wants to do with him, defiantly not tell mum, that's just a threat to get him to talk.
When he doesn't answer she shakes him "Well?"
================ Jeff POV ================
Jeff tries to come up with something to say but then she starts shaking him and fluster he accidentally responds "How about the time you found me as a diaper in my bedroom, and spend the next 2 days wearing me," before cringing realizing what he just revealed.
"Oh so that was wear it came from, so just how did you change youself in to a diaper, and shrink yourself down so you could hide in my diaper then Jeff?"
"Arrrmm, well its a secret, so I can't tell you."
"Well I guess I'll just have to investigate your room then and see what I can find" she replies, dropping him back into the bottom of her diaper, and sitting down with pressing him against her pussy as she puts the diaper back on.
Jeff decides it's time to find somewhere else to hide, only to discover while he'd been able to get into the front of her diaper and move around a bit, in his new position he's trapped pinned into her pussy crack by the diaper pressing against him.
================ Diana POV ================
Walking into Jeff's room she see that his computer is turned on, taking a look she finds a screen describing his transformation on a program called the Chronivac. She sits down feeling a wave of pleasure that she hadn't felt before emanating from her vagina, she realize its from Jeff rubbing against her, she rubs her self through her diaper causing a another wave of pleasure as she takes a look at the program finding a history listing transformations:
=== Transformation History ===
1 Hour Ago (Active): Shrinking - Size 5 Inchs, 24 Hours
1 Weeke Ago (Complete): Inanimate Transformation - Diaper, 48 Hours
================ Jeff POV ================
Feeling Diana sit down, then starting to rub him against her pussy, he feels horror at his eight year old sister using him as some kind of sex toy, but even worse is the fact hes become aroused by it.
Then he hears her, "so you spent last weekend as my diaper, and this weekend you decided to shrink your self, this program looks like it has all sorts of options for things I can do to you, I'll have to transfer it to my computer, but first I'm turning off your reversion timer, you can wait until I'm ready to change you back."
================ Diana POV ================
After transferring the program to a thumb drive, she hurries back to her room and locks the door so she can explore this strange sensation in private, well except for Jeff, but he doesn't really count any more. Rubing her self some more she says "You feel really good there Jeff," before feeling the need to pee, "Oh I think your making me need to pee, good thing I'm wearing a diaper" she finishes letting lost a stream of piss sighing in relief.
================ Jeff POV ================
Jeff only has a monument to Panic after hearing she going to pee, before being blasted right in the face be a hot stream of his little sisters piss.