I'm sorry a dingo ate your baby.
4 seconds sound clip from the Tropic Thunder (2008) movie soundboard.
You can hear this line at 01:02:27 in the Blu-ray version of the movie.
Quote context
[...]
- Pump your brakes, kid. That man is a national treasure.
- I just wanted to throw another shrimp on your barbie.
- Hey, fellas! It's hot! We're tired! It stinks!
- I'm just fucking with you, Kangaroo Jack!
- I'm sorry a dingo ate your baby.
- You know what? Fuck that, man! I'm sick of this koala-hugging nigger telling me...
- For 400 years, that word has kept us down.
[...]