The phrase "crazy bitch" is an informal and offensive term used to describe someone, usually a woman, who behaves in a mentally unstable or irrational manner. Full definition
Playing a sexually confident woman should be empowering, but instead she's labeled as an «EVIL CRAZY BITCH» (because whenever there's something wrong with a woman, it's because she's «crazy»). (filmthreat.com)
Some lying idiots say so called crazy bitches like myself know more about the Bible than atheists... that sure isn't evidenced on these blogs. (religion.blogs.cnn.com)
Lisa Kudrow was also great and played a real crazy bitch, which was nice considering the usual ditzes she plays. (rottentomatoes.com)