Yes, that's because I haven't finished counting to 100 yet.
5 seconds sound clip from The New Adventures of Winnie the Pooh - Where Oh Where Has My Piglet Gone? / Up, Up and Awry (S2E7).
You can hear this line at 00:07:57.640 in the Blu-ray version of the TV Series.
Quote context
[...]
- That's funny, I thought you was right here.
- A few large numbers, 33, 36, 38... One, two...
- I don't know how much more of this I can take!
- Well, anyway, we've found Pooh. Now only Piglet's lost.
- Yes, that's because I haven't finished counting to 100 yet.
- That's it! That's it! I can't take it anymore! I'm losing my mind!
- Oh, no, not Rabbit's mind, too.
- I better count to 100 quickly.
- Hey! Get a grip on yourself, Rabbit.
- Yeah, this is no time to go to pieces, long ears.
[...]