Wow. I never thought it was possible for someone to misunderstand stuttering on this level lmao. Stuttering is not something we can control and the source of it still isn't even fully understood in the medical world. It's an actual impediment that can have a heavy affect on a person's mental health and social life. You're friend seems to not care that he stutters. He's well ahead of a lot of us on this sub who struggle with coming to terms with this impediment. Good for him. No reason for you to ruin that for him is there?