A kindergarten teacher handed out a colouring page to her class. On it was a picture of a duck holding an umbrella.

The teacher told her class to colour the duck in yellow and the umbrella green. However, little Bobby coloured the duck in a bright fire truck red.

After seeing this, the teacher asked him, “Bobby, how many times have you seen a red duck?” Little Bobby replied, “The same number of times I’ve seen a duck holding an umbrella.”