Silly old bear. That's because I haven't told you yet.
4 seconds sound clip from The New Adventures of Winnie the Pooh - The Wishing Bear (S1E16).
You can hear this line at 00:01:39.840 in the Blu-ray version of the TV Series.
Quote context
[...]
- You see, Piglet, you never needed those earmuffs at all.
- Yeah! All you needed was a little practicing.
- Isn't it wonderful that I became such a very fine skater just as...
- Just as the spring thaws, as in.
- Christopher Robin, is that twinkly one really your very own wishing star? Really?
- Would you like to wish for something?
- Then you have to say the special wishing rhyme.
- But I don't know the special wishing rhyme.
- Silly old bear. That's because I haven't told you yet.
- Now remember, you have to flap like a bird, jump like a fish, sit down, stand up, wish, wish, wish.
- Flap like a bird, jump like a fish. Oof. Sit down, stand up, wish, wish, wish.
- You got to cover your eyes, Pooh.
- I wish for something sweet. For me.
[...]