Usually an older Cadillac, Lincoln or Oldsmobile, festooned with all kinds of cheap, gaudy, and ugly decorations found in a J.C. Whitney catalog.
Kinda like a 'pimpmobile.'
"Lookit that piece-a-shit JIG RIG, Even Aunt Jemima, Stymie an' Buckwheat wouldn't ride in that thing."
by Jersey Bounce January 26, 2005
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One who is acting in a foolish manner
Wow look at that guy he's a real jig a rig!
by OGSpence May 1, 2017
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