This happens to me, too! I'm curious if there's a name... I guess I call it "reading people." We're so understanding of the way that others' minds work that we can predict what they're going to think and say. I had this happen just a couple weeks ago when I was talking to my sister, and she thought it was crazy because it was an unusual word that she didn't even like, but one she just settled on because she couldn't think of another description in the moment..