When someone is so ridiculously stupid, and cannot handle even the simple things.

A retard that is not like other retards, but an EXTREME retard.

when a person goes retarded but ends up destroying you in a game or activity

one who is an idiot in every aspect of life, i.e. without common sense or education

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.

1) Somewhere you never should go.
2) Playing a mentally handicapped person in a film or show with no exceptional or redeeming skills.

A level of retard you should never, ever go to.