Ahem. I hope I'm not surprised!
5 seconds sound clip from The New Adventures of Winnie the Pooh - How Much is That Rabbit in the Window? (S1E10).
You can hear this line at 00:09:16.710 in the Blu-ray version of the TV Series.
Quote context
[...]
- A cake and a present. Ooh! I've got a cake and a present.
- Why, look at that. Owl is decorating Pooh Bear, for my surprise birthday party.
- Whoo-hoo! I can hardly wait. Decorations, cakes, and presents. Tra la la la la la la la.
- Ahem. I hope I'm not surprised!
- Ah. Well, here I am home. I said I'm home. It's me!
- Come out, come out, wherever you are.
[...]