What is Full Retard?
1.
To act 100% retarded with extra no redeeming special quality.
Downey: "Everybody knows you never do a full retard."
Stiller: "What do you mean?"
Downey: "Check it out. Dustin Hoffman, 'Rain Man,' look retarded, act retarded, not retarded. Count toothpicks to your cards. Autistic, sure. 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. You went full retard, man. Never go full retard."
See
2.
1) Somewhere you never should go.
2) Playing a mentally handicapped person in a film or show with no exceptional or redeeming skills.
You went full retard man. Never go full retard.
See
3.
A level of retard you should never, ever go to.
You went full retard man. Never go full retard.
See
4.
Phrase used by Robert Downey Jr.'s character in the movie Tropic Thunder. Referring to when an actor playing the mentally retarded goes all out leaving the viewer unable to connect.
Sean Penn went Full Retard in I Am Sam
See
5.
act stupid, moronical or like an imbecile
never go full retard!
See