In a cartoon, you can do anything.
6 seconds sound clip from the Big Heel-Watha (Tex Avery, 1944) movie soundboard.
You can hear this line at 00:02:36 in the Blu-ray version of the movie.
Quote context
[...]
- But in the camp, there was much trouble. The big ration program muddle.
(indian chief speaking gibberish)
- Oh-kay, boys. Go and get it.
- In a cartoon, you can do anything.
- Hello.
- Hey, hold it, chief. You gotta have a ration book to get meat, you know.
- You know, I'm so mad I could scream. And I will too. Wheee! There.
[...]