Are you telling me you don't know who I am? That's a sentence that always goes over well. Filled with humility, sympathy for your fellow human, eschewing vanity, beaming with a deep awareness of your small place in the universe. That's everything that sentence captures.
This was ostensibly the phrase that Knicks and Madison Square Garden owner James Dolan—well-known asshole—cried out just before firing a security guard who requested to see his ID, please. According to witnesses, Dolan flew into a fury outside the exclusive and super-fancy Delta Sky 360 Club and fired her immediately. After a good night's rest, he hired her back the next day. But she will remember him now and forever! Ha!
JD: "Do you know who I am?"
Presumed silence and lots of people looking on in anticipation of something outrageous pending
JD: "How long have you worked here?"
FH: "Three years."
JD: "I'm your boss! I pay your salary!"
Presumed arguing about the rules, refusal of admittance, then the glorious reversal:
JD: "Give me your ID! You're fired!"