I just posted this elsewhere, but I saw your post and thought it might be helpful to you. (Btw, I don't think you should resort to physical violence, as you could be charged for assault. Keep cool, remove yourself from the situation... leave the room... keep your head.)
What is FOG?
FOG - Fear, Obligation & Guilt - The acronym FOG, for Fear, Obligation and Guilt, was first coined by Susan Forward & Donna Frazier in Emotional Blackmail and describes feelings that a person often has when in a relationship with someone who suffers from a personality disorder.
FOG - Fear, Obligation & Guilt — Out of the FOG | Personality Disorders, Narcissism, NPD, BPD
There's a lot more on this site about dealing with narcissists, so it's worth exploring.
Best to you.