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1.
An old muscle car, (i.e. a Monte Carlo, Impala, Grand National) that is modified with hydraulics, ugly vinyl graphics and tacky gold rims that generally ruin the car's GOOD qualities.
Carlos: "Yo, check out my ride! It's a 1978 Monte Carlo with hydraulics, TIS rims, flame vinyl, a NOS tank by the console. It's beautiful!"

Any sensible person: "You just turned a good Monte Carlo into a crappy Beaner-Box."
by J-48273 June 28, 2011