She turned you into a vibrator?! Claire giggles and says "I've always had a crush on you, so this is perfect. We will see if I want to change you back", wait, she's not even sure if she's changing you back?!
She quickly checks to make sure your parents aren't around, smiles at you, and takes you to her room. "I know you're probably a virgin, right?" Well yeah, but she doesn't need to rub it in, "Well it looks like your first time will be as a vibrator, and with me, haha."
She lies down on her bed, slides off her panties, and slowly inserts you. "Oh yeah, that's good", meanwhile, you're in pure ecstasy, your entire body feels like a cock. Your sister sits for several minutes with you in her pussy, moaning and massaging her breasts. Finally, she arches her back and moans loudly, and you are squished as she orgasms.
"That was great, what should I make you next?"