Someone who makes a habit of using mood swings as an excuse for doing (or not doing) something. A habitual schitzo.
Person 1: So are you guys still together or not?
Person 2: Not sure. Have to check with her today. Guess she's just a mood swing junkie.
Person 2: Not sure. Have to check with her today. Guess she's just a mood swing junkie.
by Bill Contact March 11, 2008
Get the Mood swing junkiemug.