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(n) A line of broke-down 15-year-old pickup trucks driving 10-under the speed limit, or slower, in the left lane on a divided interstate highway. Frequently the pickup behind is mere inches from the pickup in front. You may see the driver (typically male) shouting angrily through his toothless lips.
I couldn't pass for 30 miles when I was driving in Kansas, due to the Hillbilly Parade in the left lane.
by McGrobb September 07, 2011
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