Having the characteristics of a bitch ass individual.
Caleb: Hey what's been wrong with David lately?
Patrick: He's just got a lot of Bitch-ass-ness in his sytem
Having the qualities and characteristics of a bitch ass individual. Usually an adjective.
Caleb- What's wrong with (name) today?
Patrick- It's that bitch-ass-ness I was telling you about.
Caleb- What about it?
Patrick- He/She has a lot of in her system.