It takes one to know one . = Inf. You are one also; ( colloquial, often childish ) Assertion that an insult that was made by the party to whom the phrase is directed is also true of that party.
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Mister MicawberIt takes one to know one. = Inf. You are one also; (colloquial, often childish) Assertion that an insult that was made by the party to whom the phrase is directed is also true of that party. This is a retort used when logic fails in an argument. Its inverse is 'You don't have to be a chicken to recognize a rotten egg'.OK, I get it! Thank you!