I would remember giving myself a gift as wonderful as this. Unless, of course I did it when I wasn't around.

8 seconds sound clip from The New Adventures of Winnie the Pooh - Un-Valentine's Day (S2E5).

You can hear this line at 00:04:20.771 in the Blu-ray version of the TV Series.

Quote context

[...]

- I want everyone to promise that not even a teeny-tiny valentine gift will be given.

- Oh, all right.

- Me, too.

- Certainly.

- So it's official. Valentine's Day is cancelled.

- Now who could that be?

- A valentine gift for me?

- Oh, my. Someone broke their promise. Hmm. I'm quite certain it wasn't me.

- I would remember giving myself a gift as wonderful as this. Unless, of course I did it when I wasn't around.

- It must be from my best friend Piglet.

- He really shouldn't have. But I'm glad he did.

- I must give him something as wonderful in return. Perhaps a jar of honey.

- But I'd better not tell anyone, including me. I've never been known for keeping a secret.

[...]