Maybe we're in Jellystone.
3 seconds sound clip from the Hey There, It's Yogi Bear (1964) movie soundboard.
You can hear this line at 01:11:20 in the Blu-ray version of the movie.
Quote context
[...]
- Hey, Mac, here's your hamburger.
- Shee. There must be an easier way to tell me.
- Yippee!
- I'll even be glad to see the Do not feed the bears sign.
- I just wanna see green leaves again.
- Yeah, and mountains and lakes.
- And the forest and the tall trees.
- Yogi, this isn't Jellystone Park.
[...]