when someone is very annoying or hurtful
Why don’t you rub a little salt in the wound?
Why don’t you twist the knife in my back?
You’re going to be the death of me yet.
You’d try the patience of a saint.
You really get my goat.
To get my goat=to annoy me
You’re driving me up a wall.
You really know what buttons to push.
What buttons to push=how to make me angry
You’re pushing my buttons.