I get what your saying, you should just say to those people that you stutter and there's not much you can do about it. They'll either laugh, and if they do, walk away, you didn't lose anything, you just gained their knowledge. Just try make it known more you have a stutter and that's something about you, like there's a guy who's fat, or there's a guy who's stupid, or a guy who's overly popular, it's always the same. I hope this helped.