The perfect response to any question asked. Can be used when one just doesn't want to answer a question or when one doesn't know how to answer a question.
Girlfriend: "So what exactly did you do when SHE came over last night!?"
Guy: "You know."
Teacher: "Billy, think about this. 3x + 4 = 7. What is 'x'?"
Billy: "You know."
Guy: "You know."
Teacher: "Billy, think about this. 3x + 4 = 7. What is 'x'?"
Billy: "You know."










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