Easter egg: On disc 2, highlight Play and click up and Enter. It shows a music video.
Easter egg: In the DVD Menu, go to "Extras." This menu should have the Gingerbread Man on it. Move around and hit right to select the Gumdrop buttons. You can now see various bits of trivia from the production of "Shrek." This easter egg is found only in the Region 1 DVD.
Chosen answer: Who is "everyone"? The only person surprised he can talk is the one human who is processing the fairytale creatures for banishment, and this was used as a plot device to highlight a joke (between him flying and talking).
MovieFan612 ★
Fiona also says "it talks", after he "saves his ass."
To be fair, she was locked in a castle for the majority of her life, so she wouldn't know that donkeys would be able to talk.
And yet he wasn't the only one surprised by it; watch the scene again and Fiona was surprised, too.