When I put on a weird voice, like for a joke or whatever I don't stutter either. I don't like to stick with the same one too long and sometimes I'll talk to someone I met using another voice and they'll be like confused..lol.. definitely better than trying to sing everything! (I dabble in singing and guitar, mainly just because I enjoy it, don't stutter then either) but try to just talk how I regularly would and I stutter. Weird