This is my first time posting but I know it’s wrong to choose, considering they are both something that you wouldn’t want. I’d say a stutter is worst because with a lisp at least you can get the words out. I wish I had that opportunity. I have so much input and ideas to add but I simply can’t risk saying them even though it hurts me inside to not. Also I don’t know a lot about a lisp but I believe you can correct them later in life, as for a stutter it’s not that simple.