I have same experience almost every day. I am electrician and sometimes I carry a radio. when I need to talk on the radio I just talk, stuttering or not Don't be ashamed just talk.thats how you gain confidence. you'll be surprised how people accept you. up to know nobody make fun of me if they do I don't pay attention to that. you can do it men, don't be afraid. hope one day we the stutters can speak well.