The phrase "pussy ass bitch" is a derogatory slang term used to insult someone by questioning their courage, strength, or masculinity. It combines two slang insults, where "pussy" in this context is used to imply that someone is weak, cowardly, or fearful, and "ass bitch" serves to intensify the insult. The term is considered highly offensive and vulgar, reflecting aggressive disrespect towards the person it's directed at.