On a chat show today a man described a woman as a "bunny boiler". could someone tell me what that means?

Bunny Boiler is a pejorative term for an obsessive and dangerous individual, most commonly referring to a jilted lover who is stalking the person who has spurned her or him. The term is normally used for a woman. The phrase derives from the 1987 film Fatal Attraction, about a woman who begins stalking a man with whom she had a one-night stand.