Monroe thinks that her rapping is the best, because when a rap "flows dope", the rapper delivers well and has good technique. It could also refer to how Monroe died from a drug overdose, as taking drugs is also known as "doping".
She's setting up to take down Cleopatra, a pharaoh. Monroe hopes to humiliate Cleopatra by saying she could never beat her, and telling her she should buzz off. Cleopatra's nose was revered in the ancient world as part of her legendary beauty, but Monroe thinks it makes her resemble an ugly old witch. As Mediterranean people tend to have large noses, Cleopatra's nose might have things in common with KassemG 's. As if to say, "Excuse me? When a ruler like Cleopatra gives an order, her subjects had best follow it or otherwise risk the consequences of their insolence.
Cleopatra refers to the famous scene from one of Monroe's films, The Seven Year Itch : while waiting on a New York subway platform, a draft from an oncoming train blows through a vent and up her character's skirt, forcing her to hold it and thereby maintaining some decency. She also did the same thing in the last half of her first verse. Historians and filmmakers alike call Cleopatra the "Queen of the Nile" since the overwhelming majority of Egyptians, since the founding of Egypt through the present day, live along the Nile.
In ancient times, government authority was enforced by patrol boats rowing up and down the river. She wants Monroe to bow before her, as is custom to a ruler like a pharaoh. Cleopatra taunts Monroe that she gave men lots of blowjobs, and she had to get on her knees to perform them. She says that if Monroe has so experience on her knees giving oral sex, then kneeling to Cleopatra should be easy in comparison.
Cleopatra was able to speak and write fluently in ten different languages including Greek, Egyptian and Latin. She uses this to take a stab at Monroe, calling her illiterate and a dumb blonde, at the same time referencing Monroe's marriage to The Crucible and Death of a Salesman playwright Arthur Miller.
