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A dumb-ass made-up word that means stupid shit, and it's used by losers who think they're cool. It’s usually about BA and square-headed Vietnamese people who have no life and are probably named H something.
My mom said I was doing gaddaption because I failed math again.
He said the pizza was gaddaption because it had extra cheese.
My Vietnamese cousin used gaddaption in a sentence and it ruined my day.