So for example if you said "Are you going to school today?" I'd add "my good friend, Will" in my mind.
It drove me nuts, but I was unable to stop. Then one day it just went away. Still have no idea what that was but it plagued most of my childhood. I remember when I noticed that I didn't have to do that anymore and it was probably the happiest I felt prior to my daughters birth.
Never told anyone about it before this comment. It's a strange thing to try and explain to someone.