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To set the lock on a gas station pump after you have finished filling your tank. This causes gasoline to automatically start pumping before the next customer expects it to, often resulting in it splashing all over themselves and/or their car.
Steve: Dude, what is that smell?
Paul: I got pump griefed at the Quick Trip.
Steve: Care for a smoke?
Paul: Not funny.
by Sambone September 20, 2007

Words related to pump grief

gasoline griefer griefing petrol prank