What is "superball"

Usage examples of "superball".

Bouncing a Superball off the side of the wall of the press secretary’s office, while it helps to pass the time while I am stuck in there, which I am supposed to be every Wednesday afternoon, is not technically a duty of the Teen Ambassador to the UN and only serves to annoy the press secretary and his staff, who confiscated the ball and told me I could have it back when my tenure as Teen Ambassador was over.

Apparently they are unaware of the fact that you can buy Superballs on just about every street corner, and for less than a dollar.

In fact, I had surrendered all of my Superballs to him, and had even stopped begging to look at the perv letters.