http://en.wikipedia.org/wiki/Emo_(slang)
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Emo is a somewhat ambiguous slang term
The term's definition is the subject of debate. Emo is now often used to refer to a person's fashion, personality, or both, as well as a musical category.
most definitions of emo hold that an emo person is emotionally candid, sensitive, shy, introverted, glum, and quiet
The backlash against emo has become so prevalent that it may itself have become a cliché.