- Buddy bear, it's a cloud. But just in case... hoo hoo... what would you say to a cloud, Pooh boy?
- Well, I might apologize.

13 seconds sound clip from The New Adventures of Winnie the Pooh - Cloud, Cloud Go Away / To Dream the Impossible Scheme (S4E7).

You can hear this line at 00:08:21.460 in the Blu-ray version of the episode.

Quote context

[...]

- Head for the logs!

- Uh, I think having three tiggers made the cloud three times as upset.

- Right now, being a tigger is three times as upsetting.

- This cloud has water on the brain.

- It does seem to have a mind of its own.

- Tigger, have you ever tried talking to it?

- Buddy bear, it's a cloud. But just in case... hoo hoo... what would you say to a cloud, Pooh boy?

- Well, I might apologize.

- Apologize? He started it by blocking the sun for no good reason.

- But the cloud was just doing what clouds do.

- They seem to do a lot of thundering and lightning, too.

- Maybe when you said those things and threw that stone, you hurt the cloud's feelings.

- You mean all this rain could be over a little thing like that?

- You never know what's going to upset a cloud. Oh, they are very sensitive.

[...]