You don't need to take others' false perceptions of stuttering srsly. Just keep in mind stuttering is just something wrong with your neurological internal circuits that function for articulations, not related to intelligences in the least bit. They are just ignorant of stuttering and stuttering is not a intelliectual disorder either. If they want to treat you as a retard that's their fault not yours at all. Just tell them Elon Musk also has stuttering, is he retarded?