STBXW is the one with the temper. Screams, yells, curses, etc. At me, at D, at her mother, whoever. I've seen her scream and curse at a three year old child for not acting her age.
Through our M, I always told her "you would NEVER stand for me talking to you the way you regularly talk to me."
Was I angry? Hell yes, she did something she knew she wasn't allowed to do. Did I scream like a lunatic or physically intimidate? Hell no.