"You're just too proud and ignorant to admit it father!" Arthur yelled directly in the face of his father Uther Pendragon, only realizing a little too late of both the severity of what he had said, and of the person that he had yelled at.
This statement did not in the slightest cause his father to become less angrier than he already was, if anything then it had not only multiplied, but it had both multiplied and intensified the measure of how angry his father was at his son Arthur Pendragon at this current place in time. Uther was so angry Arthur currently observed that it would most likely have been a very easy feat if a person had possibly attempted to fry eggs on his fathers head, for Uther Pendragon's face had literally turned the color of a deep maroon, causing Arthur to question at how far he might possibly make it if he had tried to run from his father, but then he realized that this would be an improbable choice.
For one reason being that his father even at his age could still fight like one of Camelot's knights of whom which he trained, even Leon an impressive and outstanding fighter, would always if Uther chose to train with them on the off chance's that he would train with them, would give Leon a fair if less than fair fight
The second reason being that Arthur had he chosen to run would have only gained himself an even worse punishment than he already had earned himself by talking back to his father, especially for yelling the retort to him.
"YOU LISTEN HERE YOUNG MAN! Uther yelled at his son anger just leaking out of his ears, if it had been possible for a person to have had smoke coming out from their ears Uther would have filled up the entire room.