noun. a person who calls everybody else a new jack, so that they themselves don't get called new jacks. Usual targets are people who generally listen to mainstream bands, regardless of experience in hardcore music, and music diversity.

When you eat dirt for the first time and leave your family to build a shack in the woods

Noun.

When two men on chatroulette are both jacking off and both refuse to hit the next button and see who can go longer.

a level in halo 3 that everyone hates and vetoes. only nubcakes can win because they are faggot enough to get into the warthog and drive around all day and shoot people