Well...it's a combination of things for me and kind of tied in to that quote something about "every normal man must tempted to spit on his hands, hoist a black flag and begin slitting throats"...
First is my love of the PoTC movies, that's what drew me in. The second part is kind of a reaction to stress... kind of when people start messing with me. It's like I hear this voice that gradually gets more insistant... it's like... "nnnnnnnnn.......errrrrrrrrrrrrr.......aaaarrrrrrrrrr........ YAAAAAARRRRRRRR.... HOIST THE COLORS"!