Hey young Charlie Brown... always glad to help out with questions of REAL science and not some of the other things people try and pass of as important.
A Goth is generally someone who dresses up in all black, may paint their face white, and listen to really horrible music about depression, suicide, self-abuse.. that kind of thing. But who they really are is something more interesting.
Generally, Goths are outcasts, you know, the kid at the back of the class we all used to throw spit bombs at. The one the fat bullies used to terrorise for lunch money but lacked any cool whatsoever. The one's that are self proclaimed victims of parents that don't care and avoidance from their peers because they stink.
As means of combating this disassociation with society, they tend to turn themselves into 'creatures' detached from the world (and reality), and like the soot they paint themselves up to be, cling together into a very diverse and interesting sub-class.
In essence though, they're trying to escape reality by compensating being left out of the crowd by moving to the extremes of weirdness.
Never feed a goth, and avoid coming into contact with them.
Goths are to emos as baby boomers are to Gen-Xrs.
Goth chics can be quite hot, but your mother won't like them. They also have weird things like pretend slit marks on their wrist (done with a paperclip) and piercings in odd places.