Ninja Rampage 

When an individual succombs to the pressure of fear, anger, and/or insanity and begins taking out people or groups of people with cunning tactical ninja like efficiency.

Margaret went on a ninja rampage after missing a deadline at work as she stealthfully cut off every driver within a 2 mile radius down i-5 before catching up to her boss and ran him into the ditch.

Ninja Rampage by nehlewolf May 13, 2011