Bung Beetle Share definition Flag Noun: (Insult)A dung beetle so dedicated he will mine his own turds.Worse then a brown noser. Beth is the Biggest BUNG BEETLE I know. If her head was any further up Christy's ass we wouldn't be able to see her feet. Bung Beetle by McDoobie&McBongsJointTreatment June 1, 2019 Get the Bung Beetle mug.