Yeah. Sometimes when I am with friends and we are talking, jokes are flowing, discussion happening and then I stutter for a long bit, instantly making everyone slightly uncomfortable, breaking the flow of the conversation, and having to go like "so, yeah" trying valiantly to pick the pieces and gear the convo back into its old pace. I feel bad for ruining the convo or the mood. This is the biggest fear of mine when I am on a larger group, or with someone I like, etc.