An acroynm meaning "not what I mean." Used in internet commenting and conversation when something is misconstrued.
Jane: Your eyes look so dark in this picture
Sally: WHAT? Are you saying I am on drugs, or I don't get enough sleep or something and that I could look healthier even!?
Jane: No...NWIM.
Sally: WHAT? Are you saying I am on drugs, or I don't get enough sleep or something and that I could look healthier even!?
Jane: No...NWIM.
by The Underdog January 25, 2010