He was sleeping on the bed until he heard you whining and screeching, he can see you being angry at him for sleeping on your bed instead of his own bed. He felt annoyed but tried to patient with you, because you're his step-child now.

"Alright, alright, sweetie.. Stop with the whining and screeching like an eagle, because you ain't an eagle."

He said to you in an annoyed tone before getting off your bed, causing you to get happy and hopped onto your bed. You're very easy to please.