Goodness Gracious do I know that feeling. I was introducing myself to a stand up comic recently and he had that response. The person I was with, also a stand up comic, made a comment to the effect of "yeah...she has a stutter". Amazing watching someone back down so fast and be so apologetic. He didn't need to, I'm so used to that response that I just smile through it, but it was nice to see someone realize that perhaps their reaction isn't as funny as they think.