The act of fully undressing and taking a nude in a classroom, meeting, lecture or other busy event. Almost impossible to accomplish without getting caught.
by UrbanDict is life July 13, 2016

A Ninja Nude is the act of getting fully undressed and taking a nude picture during a meeting, classroom lecture or other busy event. Nearly impossible to accomplish without getting caught.
by UrbanDict is life July 13, 2016
