The Secret Knock at the Treehouse
Omar and Kit had a treehouse. To go in, you had to know the secret knock. Two taps, a pause, and three taps.
One afternoon, Omar climbed up and gave the knock. No one answered. He knocked again. Still nothing.
"Kit, it is me," he said.
Then he heard a tiny voice. "Say the password."
Omar did not remember the password! He thought hard. It was a fruit, he was sure. "Apple?" he said. "Pear?" The door stayed shut.
Then he spotted a paper stuck by the door. It had a drawing of a yellow fruit with a curl on the end. Omar grinned.
"Banana!" he said.
The door swung open. Kit stood there with a big smile. "I made the drawing in case you forgot," she said. "Now you know it for good."