It's blank.
3 seconds sound clip from the Kung Fu Panda movie soundboard.
You can hear this line at 01:05:23 in the Blu-ray version of the movie.
Quote context
[...]
- OK. Come on, baby. Come on now.
- I probably loosened it up for you though.
- No, I am forbidden to look upon...
- Blank. I don't... I don't understand.
- OK. So, like... Oogway was just a crazy old turtle after all.
[...]