When you don’t stutter in your head but end up having the worst stutter actually speaking

When you don’t stutter in your head but end up having the worst stutter actually speaking I was at the gym today and saw a mutual friend in the mirror from afar. I knew he saw me and was going to come up and say hi. I planned out a short introductory dialogue in my head stutter-free, like “hey how’s it going, etc”. But when he came around, I stuttered so bad 😭