Stacey sinks to her knees. As you stare up in terror at your giant, naked oldest sister, you feel the tingling again and then you grow to five inches.
"Lick my cunt!" She snaps.
Fearing what may happen if you refuse. So, despite the nausea, you kneel down before her and crawl underneath her vast body, which is pretty close to the ground. You start right at the back of it, and slowly make your way forward, licking along the middle of the slit. You hear Stacey gasp and then let out a soft groan.
"Mmm, that's good slave." She says. "I like that. Do a good job and I may reward you. By not torturing you."
You continue licking Stacey's pussy in this for about ten minutes. During this time, she becomes increasingly aroused and you become drenched in the lubricating fluids secreted by her body.
"Rub my clit you little piece of shit!" Stacey says breathlessly. "Hard."
She lets out a loud groan as you comply with her command.
"Ohh, yes!" she whispers. "When you've finished doing my clit." Stacey says. "I am going to turn you...ooooohhhhh...into a big...fat...dildo. Then I'm going to lie on my bed, stuff you up my cunt, and use you to fuck myself until I'm tired to do it anymore."
It's at that point Stacey throws her head back and lets out a long, loud groan as she orgasms. Once it subsides, she looks down at you with a look of pure lust on her face.
"WOW!" She says with a lick of her lips. "Who'd've thought a shrunken slave would be such a good pussy toy? Now you get to be my dildo."
Before you can say anything, you once again feel the tingling sensation, and then you feel yourself slowly grow to ten inches. At the same time, you feel your whole body become stiffer, and your skin hardens and takes on a latex feel. You feel your feet swell up, your head deform, and you end up looking at the ceiling as you feel your mouth twist until it's vertical to its original position. Then the tingling slowly fades away. You feel a hand wrap around your body and lift you up. Stacey turns you to look at her.
"Ha ha ha!" she laughs. "That is so fucking cool. I've turned you into a dildo. Would you like to see your new body?" She asks.
Stacey stands up and walks over to the door to her closet, which has a full length mirror on it. The sight that greets you sends a bolt of fear, shock and disbelief as you find that what Stacey is holding in her right hand, is not you, but a ten inch long, three or four inch thick, dildo. It's with a growing sense of horror that you realise the replica penis Stacey is holding, actually is you. Stacey bites her bottom lip.
"Y'now," she says. "You look real great like that. I wonder if you'd look as good if I turned you into a REAL penis? D'you think I should find out? Get my boyfriend round here and turn you into cock. Then let him fuck my brains out? I'll have to think about it. You look so inviting like that. And I think I'll accept the invitation."