as naked as the day (one) was born

as naked as the day (one) was born

slang Completely nude; without any clothes on whatsoever. My roommate is so embarrassing, always walking around the house naked as the day he was born! We have an adorable video of you when you were about two years old, running around the back yard as naked as the day you were born! A: "Sir, we've gotten reports that there's a man walking around downtown naked as the day he was born." B: "Oh dear."

See also: born, naked

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