Such as Brunch or Linner, "Dreadfast" (Dinner+Dreadful+Breakfast) referes to grabbing a bite when drunk late at night, way after dinner, way before breakfast. It is necessary to eat this meal in an intoxication-related situation, which is when most of this particular munchies are held.
Brian Wilson got so crossfaded last night we all though he was going to blackout. Good thing we found that sketchy bar that served us some decent dreadfast and he could get back to life.