[Reaching the gate into the Emerald City, Dorothy and her friends ring the bell. A Gateman appears through a porthole.]
Who rang that bell?!
We did!
Can't you read?!
Read what?
The notice!
What notice?
It's on the door, as plain as the nose on my face! It's a [Realizes there is no notice] Oh-- Oh... [Hangs a notice on the door, then disappears]
[Reading the notice]
"Bell out of order. Please knock." [Dorothy knocks on the knocker, and the Gateman reemerges]
Well, that's more like it! Now, state your business.
We want to see the Wizard.
[Nearly falls out of his porthole from shock]
The Wizard?! But nobody can see the Great Oz! Nobody's ever seen the Great Oz! Even I've never seen him!
Well, then — how do you know there is one?
Because he, uh... You're wasting my time!
Oh please, please sir. I've got to see the Wizard. The Good Witch of the North sent me.
Prove it.
She's wearing the ruby slippers she gave her.
Oh, so she is. Well, bust my buttons! Why didn't you say that in the first place? That's a horse of a different color! Come on in!

