Not happy with the way her CNN interview was going with host Fredricka WhitfieldJoan Rivers promoting new book ‘Diary of a Mad Diva’, cut short the nationally televised interview and walked out.

“This whole interview is becoming a defensive interview,” Rivers ranted, while adding, “this line of questioning is all negative.”

The ill-prepared host who proved to be no match for the feisty and witty 81-year old ‘Fashion Police’ personality and comedian, tried to laugh it off and was hoping the mad legend was joking.

Joan wasn’t joking. “You are not the one to interview a person who does humor, sorry,” she added, before walking off the set.

WATCH.