Oh, no!
4 seconds sound clip from The Yogi Bear Show - Prize Fight Fright (1959) - S01E16 TV Series.
You can hear this line at 00:06:07 in the Blu-ray version of the movie.
Quote context
[...]
- Ready for a little action, buster?
- Let's mix it up in there, champ.
- Okay, killer. Up with the dukes.
- Nah! N-never lead with your right, chump. Never, never, never!
- Oh, no!
- The champ, he's out like a light!
- Extra! Extra! New world's champion!
- Yes, ladies and gentlemen, it could be that the new heavyweight champion of the world is a bear!
[...]