The last time someone mocked my stutter (7 years ago) it went something like this. Me: Hi, I'm T-t-t-tom Them: Hi, T-t-t-om Me: And I'm guessing you're a c-c-cunt We actually became pretty good friends Anyone who laughs, imitates, or otherwise mocks your stutter is an AH, and you shouldn't put up with it. Call it out each time it happens and let then know you don't find it funny If they continue, they don't respect your boundaries and you should cut them out