Hoo hoo hoo hoo hoo! Tiggernometry is one of the things tiggers do best.
5 seconds sound clip from The New Adventures of Winnie the Pooh - Easy Come, Easy Gopher / Invasion of the Pooh Snatcher (S3E9).
You can hear this line at 00:08:33.080 in the Blu-ray version of the TV Series.
Quote context
[...]
- Rabbit? Oh, what are you doing here?
- Oh, I was just thinking. It's my fault your homes are ruined.
- So I decided I had to change the equation back to make things right. But I don't know how.
- You're right, Pooh boy. So what are we waiting for?
- Hoo hoo hoo hoo hoo! Tiggernometry is one of the things tiggers do best.
- Gopher's been working so hard, and getting nowhere, and it's all my fault.
- Now it's time to dig Grandpappy's ultimate tunnel. And I know just where to start.
[...]