He blinked as the man scrambled back. Had he done something wrong? His shoulders dropped and he looked down. Okay. No touching. But touching was important.

"Clothes?" He asked, almost mimicking Sherlock's accent.

That was not a word he was familiar with. His people didn't have clothes.

"Naked?" He looked up and tilted his head to the side, a curious look on his face, "What is it?"

Putting English into practice was different than learning about it.