The Green Button

Noah walked up to the box and peered inside. What he saw was very unexpected. There were three buttons. One red, one blue… and one green.

"Excuse me, Ms Prince," said Noah. "What's the green button for?"

Ms Prince turned the box around and looked inside. "What green button? I can't see a green button in here. Stop messing about and choose, please. Or it's a day with Mr Thompson for you!"

Puzzled, Noah looked back into the box. There definitely was a green button in there.