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1.
A neighborhood where you can count three or more Priuses (Prii?) in consecutive driveways or parked out front if it's a really urban Prius pocket.

Honda Insights and Ford Escape Hybrids can be substituted for Priuses to meet the minimum threshold of three.
We accidentally drove through a Prius pocket, but the green zombies were all inside their solar salons and did not attack our 8 cylinder lifted pickup truck.
by Jay Langley February 11, 2010