A serious pet peeve of mine.... Someone who won't allow me to finish a sentence. Someone who talks right over me, correcting what I have said before I even say it. Someone who makes it clear that whatever I was going to say.... is not worth listening to.
You want me to shut up, stop talking with you, and go away? Easy enough..... just don't let me finish a sentence without speaking over me, and I'll be on my silent way sooner than you can believe.