"I showed the grown ups my master piece, and asked them if it scared them, they answered 'Why be scared of a hat?' My drawing was not a picture of a hat. It was a picture of a boa constrictor digesting an elephant"

The boy thought his drawing looked like a boa constrictor digesting an elephant, the grown ups thought it looked like a hat. This shows the theme because the adults had no sense of imagination, and could not see the idea of the drawing beyond what was drawn.

The first example of the theme is on pages 1 & 2