Generally referring to the "x" stereotype that is currently emerging among today's youth, as of yet (or atleast until now) unnamed, although likely seen by many. To describe the look, persons subscribing to said fledgeling "stereotype" generally have qualities attributed to all three primary "alternative" stereotypes (emo, some goth, some scene).
Hair is generally ranging from elaborately done scene styles to simple emo styles, often black or another extreme on the spectrum of dyes available, rarely traditionally coloured, and often with streaks of other alternating extreme spectrum colours sporadically throughout, or in a specific pattern, throughout. Clothing generally takes influence from casual emo or scene styles, or alternatively, a blend of casual and well dressed, often including dress shirts, ties, tight dark washed jeans, and whatever jacket or blazer that might be comfortable over top. Hats are optional, although rarely seen.
More of a fashion stereotype or style than it is something that is as well heavily dependant on personality, or atleast feigned personality, this "stereotype" sees personalities ranging from confident and well adjusted persons to your general social outcasts. Music taste seems irrelevant, although not as often are mainstream music tastes seen. Indy, triphop, punk, emo, electronica, game music, anime music, dance, it is the second large variable along with personality that is presented in this stereotype.
In terms of makeup and whatnot, often thick bits of eye makeup are seen on the females of this classification, and much less so on the males, likely because males subscribing to this are so less often seen. It's likely eyemakeup would be more niche among the men, but acceptable regardless.
As before stated, much more often seen on females.
"Did you see that x girl? She was fucking hot!"
"Social x is a more recent fashion. Girls seem to like it."
"X'ers are faggots who just can't decide on a stereotype to conform mindlessly to!"