You are without a doubt the slowest bear there is.
4 seconds sound clip from The New Adventures of Winnie the Pooh - Prize Piglet / Fast Friends (S2E9).
You can hear this line at 00:12:47.984 in the Blu-ray version of the episode.
Quote context
[...]
- Eh, you're late. Where have you been?
- I believe I've been right here, although I did spend some time over there, too.
- You missed the fire drill. Messed up the whole thing.
- You're even running too late to be late, Pooh boy.
- You are without a doubt the slowest bear there is.
- Is there anything I can do to put things back in whack?
- Well, you could start by being on time for once.
[...]