its just my two cents but for me, i would talk slower bc it reduces my stutter by a lot. maybe its because of my deep voice (im a woman) and slow talking speed that causes people to pay attention. im not too sure about the "mean"/comebacks part but this definitely works for school/work settings! another thing that helps with my stutter are hand gestures, making hand gestures as u talk about serious/work related things will make people take u more seriously.