Oh, bother. It seems to be raining picnic.
5 seconds sound clip from The New Adventures of Winnie the Pooh - A Very, Very Large Animal / Fish Out of Water (S1E19).
You can hear this line at 00:01:52.880 in the Blu-ray version of the TV Series.
Quote context
[...]
- Oh, dear. It's very large and very fierce.
- Oh, Piglet. It's a magnifying glass. It just makes things look big.
- Yeah. Even a very small you is bigger than an ant... a little bit anyway.
- Wait a minute. Since when does ham got leg?
- Oh, bother. It seems to be raining picnic.
- Oh, how can an animal as very small as myself make such a very large mess?
- No. I'm so small, I'm not even big.
- If I were big, those crows wouldn't have me to kick around.
[...]