Mine came out of a joke/insult of sorts. When I worked for New Flyer of America my coworkers would always give me crap for my distinct whistle that comes out when I speak at an eleveated voice (Lisp). After a few months of trying to get my attention by my name, last name, dude, other randoms names someone finally hollered Whistles. It has never left me and now I use it as my photography blog name, stage name, message board name. It is a good gauge of how well people know me in the fire circuit. If someone comes up to me and only addresses me by Whistles than I can usually judge how they met me. If they call me by one of my other nicknames than they probably have known me for awhile.