Verbally abuse them back - give them a taste of their own medicine.
Tie her to the bed post, bend her over a park bench, or place her across My knee and spank her *** til she regains her senses ;)
head butt them
That would be former boyfriend, if not formerly ambulatory boyfriend. Or formerly ambulatory, continent, and fertile boyfriend.<br />
Don't take that crap off any boy.
There's not much you can do other than walk away. This person will not change especially over night.