"Well, I'm not a Wicked Witch," said Dorothy. "I'm a friend of the Scarecrow's."
"She's not," said the guardian. "And she's not a friend of the Scarecrow's. And if she's your friend, your scarecrow must be an impostor!" With that, the door slammed shut again.
"Now what?" said the Scarecrow. "He doesn't even believe I'm really me!"
"I have an idea," said Dorothy. "Knock on the door again."
The Tin Woodman knocked loudly.
"What is it this time?" said the guardian impatiently, while opening the little door slightly.
"You don't understand," said Dorothy. "She's our prisoner."
"I thought you said she's your friend," retorted the guardian, mockingly.
"Well...." Dorothy hesitated.
"Well, what? I'm waiting," replied the man.