Oh, dear. I had no idea.

4 seconds sound clip from The New Adventures of Winnie the Pooh - Where Oh Where Has My Piglet Gone? / Up, Up and Awry (S2E7).

You can hear this line at 00:02:29.320 in the Blu-ray version of the TV Series.

Quote context

[...]

- How could you almost find something?

- Well, you see, I've looked in so many places, I'm sure it's much closer to being found than lost.

- I'm never loaning you another thing. You lose everything you touch.

- It's a very bothersome habit, Pooh. And someday it's going to get you in trouble.

- Oh, bother. I do have a habit of misplacing things. Rabbit's hammer, goldfish potato peeler.

- Would you like to hear me sing, Pooh?

- It bothers the others very much, Piglet. It makes them rather angry, you know.

- But I haven't even started yet.

- Oh, dear. I had no idea.

- I don't like the way I'm always displacing things, Piglet.

- Piglet? He was here a moment ago.

- Oh! I hope I haven't... No, I couldn't have.

- Piglet? Piglet! Oh, no, I've misplaced my very best friend. What shall I do? What...

[...]