I have been told this hack since my childhood by literally soo many people. Its goes by like this Get a bowl and fill it with water and then keep it on your roof where birds will come and drink from that water. Then after a day get that bowl and drink from that bowl and then it will magically somehow fix your stutter. I remember i stuttered at a street food vendor and i was with my friend and then that vendor guy started telling me this hack and i was literally soo embarrassed. I never like to talk about my stutter.