Trained picnic ants?
4 seconds sound clip from the Hey There, It's Yogi Bear (1964) movie soundboard.
You can hear this line at 00:12:02 in the Blu-ray version of the movie.
Quote context
[...]
- I guess you're gonna have to give up this time, Yogi.
- Mr. Ranger is forcing me to use my secret weapon.
- You don't think I've been sleeping all winter, do you, Boo Boo?
- Hee-hee-hee. A picnic for two. Me and you, Boo Boo.
- Relax, Boob. We will only be innocent bystanders.
[...]