NofapGuru, thanks for this post. I know your situation is not as common as other people who stutter. All of our genetic makup is different even as stutterers. However I have the same exact situation as you with fapping causing stuttering. This happened and continues to happen to me as well. I guess our sections of the brain that are in charge of speech are easily affected by dopamine and the rest of the chemicals released with orgasm. Anyway, how's the situation with your tumor?