Top Definition
Spikey poo which sometimes sticks around your ring and at the rear of your jockeys.
Person 1: "Ah, my ass is stinging like fuck, think I've got ringsting."
Person 2: "Nah, it's probably just some grungernuts."
Person 1: "Maybe, ain't washed these jockeys in a few days."
by Pigeto June 27, 2007
6 Words related to grungernut

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