Gnudist: a person who hacks while wearing no clothes.
Gnubile: an eligible young hacker.
Gnugat: a hacker's favorite candy (Though it contains little gnutrition.)
Gnumatic: a computer filled with air.
Gnuisance: a novice hacker who keeps pestering you with foolish questions.
Gnuance: a subtle, clever hack in the favorite language.
Gnumerical analysis: what you use a supercomputer for.
Gnumismatist: a hacker who collects coins?