Goth was originally a term used to describe people with a taste for certain bands eg: Bauhaus, Sisters of Mercy, The Cure, etc. in the '80s when punk started to fade out, and with wardrobes predominantly black.
In the 90s and early 2000s the goth subculture seemed to change to include bands such as Nirvana, Linkin Park, Slipknot, Cradle of Filth, etc.
Many goths have a cynical outlook on society and have an evolved sense of humor which has gone beyond the "Ya ma" as an insult and will laugh at others, and at themselves in a healthy way. Goths don't usually care what other people think of them, and don't care if they don't fit in. Goths don't care, either what sexuality, religion, etc. other goths are, and we don't take the piss out of gays because we aren't homophobes.
If you shout insults after a bunch of goths, alot of the time, they might not be offended, but take pride that people are realising that they're individuals.
S/He listens to "Gothic rock"
S/He lives a goth lifestyle.