Not is known exactly what it means, it is probably an invented word. It is the name of a song, a musical group, and even a film. Killer means thug, killer, but also somewhat uncomfortable, compromising, substantial, important. The quot; 0 quot; It could be simply the number zero, whose meaning is nothing or none.
0 killer is incorrectly written and should be written as ' 0 Killed "being its meaning:
OK = 0 Killed ( Fake ) I was used in war to indicate who had not died. An expression born in the first half of the 19th century of the jocular occurrence of the editor of a newspaper, and that eventually would become the most successful Americanism of the history.
