A crazybitch is like a crazy bitch, but more likely to attack your psyche than your person. She will do things that make completely no sense and not care that she is doing them. She is very selfish, and while she realizes this, she, again, doesn't care.
Coop: Oh yeah, he has one night off work and he was going to go to Pat's birthday party....
Dan: So she's mad that He's not spending every free minute he has with her?
Coop: Yeah, basically.....
Dan: Hey, I'm not for the whole "bros before hos" thing, but I'm going with Cam on this one, 'cause she is a crazybitch.