When used in a sentence, it's meaning is the polar opposite of the typical bitch. In conversation between men, it is used as a compliment towards a female
Pierre: What did she say?
Shawn: Well we chatted for a while. She was completely the opposite of what I thought she would be. My first impression was that she was a major bitch.
Pierre: Nah everybody feels like that at first. She's a stib man no doubt