Simple past tense and past participle of bong.(verb)
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Use "bonged" in a sentence
"Local developer Bill Walsh lamented to a San Diego friend that since Olympian Michael Phelps got "bonged" by Kellogg Co., we won't be seeing his mug on cereal boxes."
"The big clock in the living room bonged out eleven."
"So jumping right in, since I've not only drunk the Kool-Aid but have spiked it and then beer-bonged the thing, I am always riding the thin line between bombastic rhetoric and thoughtful insight."