"Mightiest warrior in the kingdom." A pause so Arthur can writhe. "And a little kid broke your ankle."

"Shut up," Arthur growls, not that it worked the first time. "S'just a bruise."

Merlin looms over him, smelling like Gaius's ointment. "If you hadn't been a prat and told that kid he looked like the wrong end of a dog, this wouldn't have happened."

"He was in my way, and I'm ordering you to be quiet."

"Prat," Merlin sing-songs, disrespectful hugely-eared bastard. "Prat, prat, prat."

Arthur scowls, but tries not to be too pratlike as Merlin changes the compress. He thinks he succeeds.