Dustin Hoffman, Rain Man, looked retarded, act retarded, not retarded. Count toothpicks, cheat at cards. Autistic, sure. Not retarded.
10 seconds sound clip from the Tropic Thunder (2008) movie soundboard.
You can hear this line at 00:43:47 in the Blu-ray version of the movie.
Quote context
[...]
- You're serious? You don't know?
- Everybody knows you never go full retard.
- And he was a goddamn war hero. You know any retarded war heroes?
- You went full retard, man. Never go full retard.
[...]