I guess the only way to convince Rabbit I'm old enough to take care of myself is to go away and take care of myself.

7 seconds sound clip from The New Adventures of Winnie the Pooh - Tigger Got Your Tongue? / A Bird in the Hand (S3E10).

You can hear this line at 00:15:14.846 in the Blu-ray version of the TV Series.

Quote context

[...]

- I'm too old for old times. I'm grown up.

- Of course you are, dear. I just love it when you pretend you're a big girl.

- Now it's nappy time.

- But, Rabbit, I don't take naps anymore.

- Good night, Cassie, dear. Sleep well.

- Good night, Rabbit.

- I guess the only way to convince Rabbit I'm old enough to take care of myself is to go away and take care of myself.

- Come on, Stan, explain how I said it again.

- Okay, but this is the last time.

- We get the bird in our hands, then trade her back to the rabbit for honey.

- Oh! Oh! You're brilliant, Stan! Brilliant!

[...]