I've had a stutter for a long time, but can usually avoid it if I can calm myself or if I literally don't care about the situation. I found out in college that if I smoked weed I didn't stutter... Probably because I gave no shots about literally anything when I did because I was so stoned. I don't do that anymore and my stutter is currently more difficult to control than it was before I discovered cannabis. Kind of regret it now because I should have just been doing therapy. Stuttering is generally linked to trauma and as I have been doing therapy it's been helpful.