Edward: I'll tell you what the Prince is going to do today!
Then Edward complains that he's being treated like a village idiot. The King isn't happy to hear this.
The King: I'm glad you [the Lord High Chamberlain] stayed to hear that. After all, he is the heir to the throne.
Edward: Father, you're the one who treats me like an idiot!
Edward gets some snark in at the Lord High Chamberlain.
Edward: Now you mark my words. Before you can count to ten, through that door — with the odious punctuality of our neighbour's much-vaunted, recently-invented, hideously irritating cuckoo clock — will come our dear and loyal subject, the ever unctuous Lord High Chamberlain.
Then John counts to ten, and he gets as far as "seven" before the Lord High Chamberlain arrives.