Lucy called and threw something in his direction, which caught on his shoulder. Rescuing them, they felt like boxers. Merlin cared how clean they were, they would do. That and a t-shirt.
In the other room, he could hear the door opening. "One minute!" he called out, cursing himself immediately afterward, because otherwise she maybe would have thought he was out and gone away. The boxers felt uncomfortably tight, but fine this was an emergency.
He felt around for the dresser, found it with his shin, and scrabbled through it for something like a t-shirt. He fingers closed on something and he pulled it on as he shuffled blindly into the outer room.