Basically means the same thing as retarded, only that it takes out the prefix "re-" to disassociate itself from the true, literal meaning. It is used as a less offensive variation of the term.

Someone who is so retarded, they are re-retarded. They have therefore gone back on themselves, and are just tarded.

Someone who is so fucking special, that they don't deserve the privilege of the prefix "RE."

Its what someone is when they call someone else Retarded. A way to reiterate what they consider themselves but pass the blame off onto someone else. You can't have a replay without it first being played.(no pun intended rerun). Nothing can be explained to someone else without it first being understood by yourself.

my girlfriend

Faster, easier, and funnier way of describing a mentally challenged individual.

A slightly derrogitory term for the use of the adjective 'retarded' meaning stupid, amusingly dumb, or almost never the real definition; mentally challenged. The word is only offesive to those without a sense of humor or if actually used offensively.