Every parent or grandparent who has an excercise ball in their house has used it as a toy. And ... most of us have had to put more air in at one time.My Blue Ball provided a whole weekend of fun when my grandson came to visit. We played with the ball, we excercised and we had to blow it up. Perhaps I put too much air in, or perhaps we were a little too rough, but sure enough it popped. I'm not sure if we had more fun with it when it was full, flat...