The time period, usually from 7th grade - 10th grade, when one is emo af. This usually results in emo hair, Twenty Øne Pilots shirts, and endless days crying about the breakup of My Chemical Romance. In some special cases, this emoness lasts for much longer, like about until death. Advice: Do NOT call an emo goth. They will flip out.
Person 1: Oh my gosh did you see Jenny today? She dyed all her hair black.
Person 2: Yeah she's just going through her Emo Years
Jenny: *sobs* ITS NOT A PHASE *face contorts into expression of complete anger* ALRIGHT WHO WANTS TO FIGHT ME FIRST