Slang for female customer service person who is usually more concerned with their fingernail polish then your customer satisfaction. Usually unsatisfied with their "career" so it comes out in their lack of care/energy for the work their supposed to be doing.
Pffft , that computer operator just told me "she too busy right now to assist me with the issue" , what a bluenail.
I am not calling support , everytime I call I get a bluenail. I'd rather disconnect my service. Then deal with her...