Kirk Lazarus: Everybody knows you never go full retard.

Tugg Speedman: What do you mean?

Kirk Lazarus: Check it out. Dustin Hoffman, ‘Rain Man,’ look retarded, act retarded, not retarded. Counted toothpicks, cheated cards. Autistic, sho’. Not retarded. You know Tom Hanks, ‘Forrest Gump.’ Slow, yes. Retarded, maybe. Braces on his legs. But he charmed the pants off Nixon and won a ping-pong competition. That ain’t retarded. Peter Sellers, “Being There.” Infantile, yes. Retarded, no. You went full retard, man. Never go full retard. You don’t buy that? Ask Sean Penn, 2001, “I Am Sam.” Remember? Went full retard, went home empty handed…

– “Tropic Thunder” (2008)