A psycholohical disorder where by one brother (typically the second or middle child,) feels he has to fuck every girlfriend his older brother has. In some cases resulting in a baby.
He was right , nextminute he pulled a njb and Teresa was knocked up!
Non-Judging-Breakfast-Club.'taken' from the movie "breakfast club" and inserted into the tv show gossip girl , the njbc represents chuck , blair , nate and serena and their friendship.
Blair: don't worry, you can trust us, we're the non judging breakfast club.(njbc)