Arthur made his way quickly to the kitchen, slightly worried about what he'd find there. Merlin was insane enough at the best of times, what would he be like after so much sugar and coffee?
He sighed as he entered the room, watching Merlin pace quickly. And drink coffee. "Merlin," he said, gritting his teeth and crossing to him. "No more coffee today." His tone was firm as he gripped the cup, attempting to ease it out of his hands.