I never tested what physically smoking weed in social situations does to my stutter. But just a few weeks ago a guy i was with was smoking in the car. And i definitely got a little buzz off the second hand smoke. Nothing to inebriate me but just enough where i could feel it. I was a chatter box after that lol. In my experiences smoking weed in the past i would get couch stuck and not talk much at all. But just that little amount got me loose. I was so excited that i was taking every opportunity to speak. I was cracking jokes. Holding long form conversation which I rarely can do. Without stuttering at all. Speaking to worrying about what other people think. It only bothers me when i meet a new person who doesn't know i stutter. Once i know a person long enough that they know i stutter it doesn't bother me when i do it.