What is a redneck?

From TZ.
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To a person in the US, it is anybody from the South.
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To somebody in the South, it is anybody in Mississippi.
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To a person in Mississippi it is somebody who lives in a mobile home.
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To somebody in MS living in a mobile home, it is a guy who drives a pickup.
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To a MS guy in a trailer house who drives a pickup, it is a guy who drives a pickup with a Dale Earnhart decal on it.
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To a MS guy in a trailer house with a decal of Dale Earnhart on his pickup, a redneck is somebody who drives around with his dog in the back of the truck.
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And to a MS guy driving around in his Dale Earnhart pickup with his dog in the back, a redneck is a guy who puts Coca Cola in his morning coffee.