Usually when I have an opening or have pieces in a show I invariably get asked many questions relating to the creepier side of my work. I love love love to answer this question which generally goes like this...."wow you are so imaginative"....read this as......gee, do you have serial killers in your family.....or "where does all this (gesturing at the artwork) come from......which reads....gee, did you have a weird childhood? As an artist you have to learn to embrace all sorts of questions that arise from your work. The longer you can talk with a potential customer the better, you never know if that person will buy something or knows someone who will go ga ga over your work.
Generally my flip answer is....."better on the walls than in my head, don't you agree", and things go from there. My rule of thumb is always be as nice and as articulate as you can, because if they are willing to talk it is just another step toward purchase. Don't say "oh I am so shy"......"I don't like talking about my work"....if you are willing to put it out there then be willing to stand by it and talk about it, it's part of the drill? With the economy contracting and lots of competition you must be willing to go that extra step.