Tigger didn't lose his voice. That nobody who sounded so very much like Tigger took it.
6 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 00:05:01.000 in the Blu-ray version of the TV Series.
Quote context
[...]
- T stands for Tigger, by the way.
- Gotcha!
- Tigger's shouting a great deal more quietly than before.
- Perhaps it is part of Plan T.
- I think he's trying to tell us he lost his voice.
- Then why didn't he just say so in the first place?
- Pooh, remember what Tigger said about nobodies being sneaky?
- Tigger didn't lose his voice. That nobody who sounded so very much like Tigger took it.
- Oh, the same one who took my painting. How will we ever find him, Pooh?
- I suppose the best place to find a nobody is nowhere in particular.
- Did I say nobody? Oh, don't be ridiculous.
[...]