Arthur was particularly mean today, but honestly, he had it coming. After so many endless days and sleepless nights Merlin was on edge and just snapped. He was always a bit out of line but today he went too far, even by his own standards. It wasn't the regular teasing, his comments were just plain rude. He should be apologising first thing tomorrow, and he knew he had a whole night ahead of him to think of ways to make it up to him. His attempts at finding a solution to his problem still proved futile. Gaius could probably help.