Have you ever heard a phrase or word that just rubs you the wrong way?

I was sitting and watching a show when the character kept saying My Lady. He wasn’t a servant or anything like that. However I found I started to dislike this character more and more as he used those words. If I’m watching a period movie where it was common to hear those words than it doesn’t bug me but it bugged me to no end in this comedy. I don’t know why.
What word bugs you so much that you would rather hear nails across a chalk board? Do you know why it bugs you?