Well, since Piglet's not coming out, and we can't get him out, there's only one thing left to do.

9 seconds sound clip from The New Adventures of Winnie the Pooh - Nothing But The Tooth / Gone With The Wind (S1E11).

You can hear this line at 00:06:33.973 in the Blu-ray version of the TV Series.

Quote context

[...]

- Enough lollygagging. Time to get to work. It's a long way to Tipperary.

- Tipperary? But Piglet doesn't live in Tipperary.

- Uh, need to make a right turn.

- This is it... directly under Piglet's house.

- Whatever we do next, I hope it's a little less... moist.

- Well, since Piglet's not coming out, and we can't get him out, there's only one thing left to do.

- You mean?

- Yes, Rabbit. We must give Piglet a staying inside party. It's like a going away party... only different.

- Silly hat. Oh, ouch.

- Oh, yes. Reminds me of my great-uncle Waldo, the homing pigeon. Mistook a closet for the front door. Didn't find his way out for three years.

[...]