With that, though, Arthur thinks Merlin has probably won. His breath catches in the back of his throat at the prospect of being stoppered with a plug between each coupling: it'd keep Merlin's seed in him, hot and sweet, as a reminder of who he belongs to. The prospect is all too appealing.

"I'd never get anything done," he chuckles, closing his eyes as Merlin palms his balls. It feels wonderful - a lazy pleasure he's never know from the hand of another. "All I'd be able to think of is you; when I could next have you swap the plug for your cock."