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A person who is obviously weird, strange, and does retard-like things, but is a fully functional human being, or whatever species they are. Usually they are assholes, but they're usually enjoyable and funny.
Example 1)

*Gonzo screams "Dick Waterfall" in the middle of an instructional period*

Jessica: What is wrong with that man

Amber: I don't know, but he must be a pretty functional kind of retard.

Example 2)

*Actual disabled child walks by*

Jessica: He's probably not a very functional retard

Amber: Dude, that's my brother.
by ThatFuckWad December 04, 2014
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Apr 28 Word of the Day
Literally everyone, ever. Including the writer of this definition.
by masokitsune January 17, 2019
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2
fuhngk-shuh-nl ri-tahrd

1. Psychology. a person of the operational order in a former classification of mental retardation, having a mental age of less than three years old and an intelligence quotient under 25 yet still mantains the ability to convince society of their relevance, and ability to be trusted to act intelligently.

2. A charismatic individual which demonstrates inconsistent reasoning abilities and has an inherent disreguard towards their sociological perspective.

3. One who assumes "any publicity is good publicity."
Dixie: Can you believe that idiot?!? Does he have any idea how offensivly stupid he is?!?

Dewey: I can believe it because he is a Functional Retard.
by Mr. Nova<3 March 18, 2011
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