It means coming back to life as a RETARD, not as a hillbilly.

The person who posted the previous definition was thinking of reintarnation.
Damn, it was quite sad that Mark's ubergenious rocket-scientist son had just died in an explosion while working on the latest space shuttle 9 months ago. However, my neighbors next door just had a kid that looks like Mark's son when he was baby, though I heard the kid was diagnosed with Fragile X syndrome! It looks like Mark's son has reintardated(reintardation)! Whoop-dee-doo.

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Mark H. Proud Urban Dictionary Slang Author since February 2004.
by Mark H May 08, 2006
Converting to a new religion and ending up more stupid than before.
His constant preaching is a sign of reintardation,
by Blursaw February 11, 2010
When somebody is reincarnated and returns as someone who is mentally challenged or retarded.
There was a boy who came back as a retard after being a famous celebrity in his previous life. Such beliefs stem the Buddhists who believe in Reincarnation, well reintardation is when someone comes back as a mentally retarded person.
by Phaenixdrools April 18, 2009
Coming back to life as a hillbilly.
Did you here Spud was shot while hunting? Mary Jane And Billy Bob just had a baby, I think it is Spud Reintardated!
by TheCowboyofKhaos February 14, 2004

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