Well as for me, it's just a character from an old french movie (Les Tontons Flingueurs, which could be translated as The Old Gunners), and played by a famous french actor, Bernard Blier...
Awful little man but great actor, playing a casino -not so clean- owner :
, with great ambition
I've been using that nick for the last 13 years, and naturally answer to it irl...
ps: I don't look at all like him but I luv the character he plays in that movie, angry, vindicative, more pitbull than diplomat, most of my evil side ^^