You can't defeat me.
6 seconds sound clip from the Kung Fu Panda movie soundboard.
You can hear this line at 01:19:12 in the Blu-ray version of the movie.
Quote context
[...]
- It's OK. I didn't get it the first time, either.
- There is no secret ingredient. It's just you.
- Stop it! I'm gonna pee. Don't. Don't! Don't!
- You... you're just a big fat panda!
- I'm not a big fat panda. I'm the big fat panda.
- You're bluffing. You're bluffing. Shifu didn't teach you that.
[...]