The "gothic" style can be researched elsewhere, as can the term "retard".
"Gothtard" is a derogatory word or insult.
It implies that a person is a idiotic / insipid / stupid / moronic person who portrays a "gothic" personal style.
The term can be applied to both poser-goths and actual goths, though it is more commonly used to insult the poser types by both the goths and non-goths alike.
Many people (especially old-school goths) refer to todays "emo" movement as a plague of misdirected, ill-informed, depressed, poser "gothtards" since the "emo" movement attempts to derive several style elements from the gothic style such as facial piercings, raven black hair, a wardrobe dominated by black, and refrain from "average" society. However, it idiotically neglects many "key" gothic features.
These two movements are distinct, and should not be confused.
2. Suzy portrays all the goth "criteria". Dresses the part. Listens to the part. Usually talks and acts the part. Conversing with her goth friends she chimes in "I want to travel to all 4 continents!". Her friends mumble "what a gothtard".
"But pretty much its just a fun name to call someone that you cant stand, "Me and my friends made up" :D
Look at that gothtard over there; yea he is an idiot