2.) Used to verbally escape from answering questions, or direct accusation by feigning sleep.
TIM: Bill, are you awake enough to go to the movies?
BILL: Nert (sleeps)
JILL: Jane, is this your bloody knife in the bathtub?
JANE: Well...I...NERT (feigns sleep)
This word evolved out of a sound made to imitate retarded people. It was more like "Ner-ner-nerrrrt!" in it's original form.
-First documented use in Meridian, Idaho in the early 90's. Evolved from the sound people make to immitate mental retardation.