potato dust
(collective noun) individually small pieces of leftover chips left in the bottom of the bag, often no more than a half-inch by inch or smaller, which make up half the weight but 1/8 the space of every bag of chips, doritoes, pretzels or other snack material; forces those eating to pick up small stacks or awkwardly held bunches if you want to use the dip. (See also corn dust) Causes greasy fingers.
potato dust by phillydrifter September 2, 2010
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