One who possesses superior intelligence and is therefore placed in special classes with other gifties.
The gifty is characterized by poor social skills (they seldom deign to socialize with normies), grammatical nitpicking, and explosive individualism.
Some gifties are also nerds. These are often the least normal (and thereby the most gifted) of all the gifties, and usually embody certain aspects of the gifted subculture.
Teacher A: I hate teaching the damn gifty class.
Teacher B: Why?
Teacher A: It's so chaotic. They just spent the whole class arguing.
Teacher B: What about?
Teacher A: Kirk vs. Picard.