Whats the Definition of Emo and Scene?

from what i feel and what i know,
emo is for emotional people that deals with their problems a different way, like through hurting themselves but.
someone that is sensitive, and doesn't particularly like to be always happy, but know that not every emo kid cuts themselves and is ALWAYS depressed some emo's are happy sometimes.
but saying your emo and just being like "Oh yeah im emo, then your really not."

alot...duHH