This can be rather confusing to kids who are not already conversant with the slang or the in-joke. In case of posting IYKYK without any context, it can make other people feel that they are not part of each other or that they do not know what is happening in the discussion. The children who are of younger ages might also get the word not in its true meaning of something secretive or deliberately concealed. This misunderstanding is not bad in itself, so parents can assist by clarifying that this is in most cases a simple expression of fun that is used to point out shared experiences, nothing serious, or dangerous.

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