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A person who drives around like a total jackass. Ricer. Slow car with a loud exhaust. A person who thinks like a ricer and does things to their car that don't make it fast.
Alex's cavalier/integra is a tunner mobile. Alex is a tunner.
by SKpuddle October 14, 2008
A douche bag.
Harry is such a Tunner.
by nyme January 30, 2012