An adjective that's supposed to be used to describe someone irritable, moody and whiny. Even if a person is not bitchy but rather, honest or blunt, a stupid person may use "bitchy" to describe that person. Bitchy is the creative limit when it comes to insults coming from the same stupid people.
1. Did you hear that? We were talking for the past hour about me and she just told me to SHUT UP! Out of nowhere! Geez, she's bitchy today!!