As in: "Madam Kafoops" (Australian, gently derogatory)
Usage: "Who do you think you are? Madam Kafoops?"
Might be said to a child who is expecting mum to wait on her hand and foot or who is being obnoxious and oozing "entitlement". I don't think I've ever heard it used of or to an adult, hence my qualification "gently".