The statement, "Do you know who I am?" should never be uttered.
Hahaha, that reminds me of a joke.
A student walks into his final exam half an hour late. He takes an exam, and start writing. When the time is up, the other students start handing their exams in and leave, and he is still writing. The professor reminds him that his time is up; he has to turn in his exam now or it won't be marked. The student keeps writing anyway.
The professor puts the exams into a neat pile, there are over 150 so this takes a couple minutes. The student finally finishes writing and tries to hand in his exam. The professor says, "I told you the time was up and I can't mark that now."
"Do you no who I am?" the student asks imperiously.
"No," says the professor.
"Do you know who
"No," the professor is quite annoyed by now.
"Good," says the student, and sticks his exam somewhere in the middle of the pile!