The culture and practice of pretending to be dark, scary, or mysterious. These people are often very much unlike what they attempt to be, and are, in fact, friendly, intelligent people who have clung to a stereotype that suits them. See: pseudo-punk, pseudo-goth, and emo.
1>My dear sweet lord. Johnny used to be so friendly. Now all he does is sit at the back of the cafe in his pseudo-noir clothes and whine about everything.
2>Wanna go over and say hi?
1>No... just, no. That whiny b-tard can be alone if he can't accept who and what he really is. =p
Conforming to non-conformism...
Despite what may have been said about goths, they do not "conform to the non-conformist" lifestyle. Those people are the preps, townies, emos, and the like. These people (the conformists) take the original nature of gothic culture and package it into things like metallica who, despite what some fans might like to believe, were sellouts from the very beginning; taking dirty, hard, and soulful music and predigesting it for consumption by the masses.
The pseudo-noir culture, based off gothic culture, is lecherous and destructive to the goth image; trying to scare people by combining cultism, mob tactics, goth, and emo lifestyles into one big fake dark smudge.
The darkly dressed man sitting in the corner and drawing, reading, or wrapped up in deep thought is probably a goth.