A female that has surpassed the definitions of "bitch", and "cunt", so far, that she is a walking/talking insult in, and of herself. Her ego is so inflated, that even a narcissist would say, "Damn, chill out girl!", and her sense of self-worth has surpassed that of even Donald Trump.
"Dude, don't be a Londa."
"Why are you being such a Londa?"
"Holy fuck! Who invited the Londa?"