(Arthur is furiously hitting a punching bag that Merlin is holding for him)
Merlin: You seem tense.
Arthur: What do you mean, tense?
Merlin: You know, agitated, on edge, angry.
Arthur: This is not anger, Merlin. This is controlled aggression.
(The punching bag comes off and Merlin drops on his back to the ground under its weight)
Merlin: Great, I'm glad we cleared that up.