Up, down. Up, down.
6 seconds sound clip from The Yogi Bear Show - Prize Fight Fright (1959) - S01E16 TV Series.
You can hear this line at 00:03:22 in the Blu-ray version of the movie.
Quote context
[...]
- Who, me?
- But, Yogi, I thought the fighter was supposed to skip the rope.
- That's what makes them tired, Boo-Boo.
- Gee, you're sure smart, Yogi.
- Smarter than the average champion, Boo-Boo.
- What's on your mind, Boo-Boo boy?
- Yes, indeedy. I'm fit as a fiddler, Boo-Boo.
- I will now give you a demonstration of superhuman bear strength!
[...]