I finally finished getting naked, as Michelle finished growing, and my cock was at its biggest erect size. It still wasn't enough for me, but if I made her grow any bigger, she'd destroy the sides of the buildings next to her. So I wished us into the most secretive part of the city that I know of; my house. It was at least three stories tall, with plenty of space for someone of her height to grow.
"Did you just teleport us? That was so weird... it turned me on more than it needed to, Joe," Michelle said admittedly.
"I teleported us to my house. Isn't it gigantic?" I asked.
"It certainly is a nice place! I love it!" I had to make her unaware of the powers of my ring, so to keep it a surprise for her, I wished that she wouldn't ask questions about the ring on my finger. So now I could finally get to work on growing her to be my perfect big woman. She'd be able to grow at the most 25 feet, so I want to try and keep it slow and steady. I wished her up two more feet.
"Oooohhh! Here comes more, Joe!" Michelle said. As she started growing again, she started stroking herself in front of me; I hadn't even wished if she would do that, so I think she doesn't mind it at all. So I started doing the same as she reached thirteen feet. Still growing and making me hornier by the second, my movements becoming more rapid by the second. I was nearing release as she stopped growing at an unbelievable fourteen feet tall. Her giant breasts were even more pert... so beautiful... I wished that I wouldn't cum until she does, and sure enough, my release wasn't as near as it was before. She continued to stroke herself, a giant hand reaching for her right breast; rubbing against it, and pinching her nipple repeatedly. Soon she was nearing release, and so was I again. A few seconds later, she came, a veritable floodgate of juice flowed out of her pussy and all over the rug (which really tied the room together). I came, a few tiny ropes of cum splashed and mixed with her own juices, making a sticky mess on the floor.
"Wow... That was intense... I never knew how much of a mess being a giant can be though. Sorry, Joe!" Michelle said, laughing while one hand was rubbing the back of her head.
"It's alright. No harm done!" I replied happily. If I want to keep this up with Michelle, I'll have to play along... but the question is... how?