Story from the original post:

Unable to move now, their body and neck continued to inflate with water. All they can do now is wait as their new rubbery body continues to inflate with water. The sensation of water filling their body started to feel good. They did not know why, it was almost an addicting feeling, like they wanted to keep filling up with are and increasing the pressure. They finally stopped filling with water. They had become a pretty round inflatable now. They were also weighed a lot less now too. They could feel their new rubbery feet lightly press against the ground. What was going to happen? They cannot move at all, and there is no way to go back. They are this way now forever. At least the product did not lie, they did lose a lot of weight, and it did change their life forever. And they were right about smiling after drinking it, smiling forever.

But look at their face, they look so happy now. I am sure they would not want to go back even if they could.

They should eventually learn to accept this change, and they are not changing back. Now all the new Charizard inflatable is able to do is enjoy the feeling of the pressure inside of them.