Camera- Back to Normal

I sighed. “Can you take the negative and make a positive of it? And can you take
the positive and make a negative?”
Shari let out a sharp cry. She realized what my plan was.
Maybe if we reversed the pictures, it would reverse our bodies.
Terry would make a positive of Shari’s negative, and she’d grow back to her
normal size. Then he’d make a negative of my picture, and I’d shrink the way Shari
had.
It seemed to make sense. Was it worth a try?
...
Finally, the door swung open and Terry stepped out. “Here,” he grunted. He
handed me the new prints. “Don’t forget what you said about your allowance.”
“I won’t,” I promised. “Thanks, Terry.”
I gazed at the new prints. Terry had done it right. A positive of Shari, smiling into
the camera. A negative of me, weighing four hundred pounds.
...
The next morning, I woke up early, before my alarm. I stretched and yawned. Then I
turned and struggled to pull my huge body out of bed.
“Heave-ho!” I cried, straining every muscle.
And I went flying across the room!
“Oww!” I groaned as I hit the wall. I bounced off. Dropped to the floor. Bounced
up again.
“What’s going on?” I cried out loud.
And scrambled to the mirror. And stared at the reflection of my old face. My old
body.
No folds of sagging flesh. No puffed-out cheeks or bulging balloon of a belly.
Me!
I was back!

Chapter 24, 25