The way Alexander said the two words, 'Your Majesty.' conveyed not a shred of respect but only anger and contempt that was clear to everyone in the room.
Alexander hated being interrupted and the idiot jumping up to obstruct something he had no idea of, made Alexander ticked off.
So when Alexander calmly, with ice in his eyes said those words to Ptolomy, the latter shrunk in fear.
"As I was saying," Alexander started again, repeating, "Everyone who comes to see the two kings, the dead one and His Majesty, will get a bowl of porridge."
He then asked Grahtos, "Now captain, since time is short and you have the whole city to cover, you are excused from this meeting. So please take your men and spread the word. The defense of the city depends on you."
"Yes, commander." Grahtos promptly got up hearing this command and after performing a military salute, turned and left with hurried purposeful steps.