Non NPC Behavior
Non NPC Behavior (NNPCB) is a type of behavior that is abnormal or irregular, used to describe people who act out of the ordinary.
Did you see that guy randomly roaring? That is Non NPC Behavior.
The students at the school engage in Non NPC Behavior by vandalizing school lockers.
The students at the school engage in Non NPC Behavior by vandalizing school lockers.