MM-MM!

Left Door Knocker:

It's very rude to stare! Sarah:
Oh! I'm sorry, I was just wondering which door to choose. Left Door Knocker:
HUH? Right Door Knocker:
[muffled]
It's no good asking him, he's deaf as a post! Left Door Knocker:
Don't talk with your mouth full! Right Door Knocker:
[muffled]
I'm not talking with my mouth full, I... Sarah:
Wait, wait, I can't understand you. [she takes the ring out of his mouth] Right Door Knocker:
Ah! Mm. Oh, oh, it is so good to get that thing out. Sarah:
What were you saying? Right Door Knocker:
I said, It's no good talking to him, he's deaf as a post. Left Door Knocker:
Mumble mumble mumble! You're a wonderful conversational companion! Right Door Knocker:
You can talk, all you do is moan! Left Door Knocker:
No good! Can't hear you! Sarah:
What's behind these doors? Left Door Knocker:
WHAT? Right Door Knocker:
Search me. We're just the knockers! [laughs] Sarah:
Oh. [she goes to the left door, pushes on it] Sarah:
How do I get through? Left Door Knocker:
HUH? Right Door Knocker:
Knock, and the door will open! Sarah:
Oh. Ludo:
[with the ring in his mouth]
Hmmph? Sarah:
[amused]
Ludo! [she takes the ring from Ludo, holds it out to the Right Door Knocker] Right Door Knocker:
Hey! I don't want that thing back in my mouth! Sarah:
C'mon, I want to knock! Right Door Knocker:
MM-MM!