Oh, bother.
2 seconds sound clip from The New Adventures of Winnie the Pooh - Luck Amok / Magic Earmuffs (S1E15).
You can hear this line at 00:18:44.480 in the Blu-ray version of the TV Series.
Quote context
[...]
- Yeah! And tomorrow we got to break the tie!
- Yeah, I better be going, too. Bye, everybody.
- Say, isn't it a little foolhardy heading downstream? Don't you know there's a waterfall over there?
- Piglet!
[...]