A phrase added to the end of a sentence to indicate a forceful rejection of a particular action. Usually used to refer to unpleasant or unpopular actions.
Person A: "I heard you playing the piano, then you just stopped, how come?"
Person B: "They asked me to play Abba, you just don't do that."
Person A: "I can't believe they pulled that pitcher! He was doing so well!"
Person B: "I know, you just don't do that!"
Person B: "They asked me to play Abba, you just don't do that."
Person A: "I can't believe they pulled that pitcher! He was doing so well!"
Person B: "I know, you just don't do that!"
by Saint Danger October 23, 2009