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The sound a car emits when it has engine troubles or when it's just a piece of junk.
Dude 1: "Hey man, what happened to your Olds?"
Dude 2: "Dude that shit went pop pop diggy diggy for the last time son... it's done for"
Dude 1: "May it rest in peace doggy..."
by Da Vin Chee January 20, 2010
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