I'm not from the UK and have never visited, so sorry in advance if I get some things wrong. :)

"What are you watching?"

"The telly."

"Well can you turn it off. I'm on a case."

"No."

"And why not?"

"Because it's the Doctor Who series premiere."

"And what has that got to do with anything? I'm working, turn it off."

"No. If you want to think in peace, go to your room."

"Why can't you go to your room? You have a TV in there, watch it on- what is that noise?"

"My TV broke two months ago, so no, I can't. And that's the sonic screwdriver. Will you please stop standing in front of the telly?"

"What the hell is a sonic screwdriver?"

Exasperated, John leaned around Sherlock's legs to pause the show. "That. Now please get out of the way."

Sherlock stared at the screen, then huffed, snatched his laptop from the table and stomped to his room. "Sonic screwdriver," John heard him mutter.

Not even five minutes had passed before he heard Sherlock yell "Turn it down!"

John was about to oblige before an idea started forming in his head. "Fine!" he called back, while turning the volume from 62 to 70 with a devilish grin.

8...9...10...11- Sherlock's door opened and his head poked out. "You turned it up, not down," he hissed.

"Prove it."

Sherlock stomped down the hallway and through the kitchen, his bathrobe angrily flaring out behind him. He stopped beside the TV and glared at John. "It was just over sixty and now it's around seventy."

"Maybe the characters were whispering and I couldn't hear."

"No, there's an action scene going on. Oh look, now she's screaming."

"And you're paying attention."

"Only because the volume's too loud."

"Really?" John stared at Sherlock dead in the eye and turned it up to 78. He tried (and failed) to keep a poker face as he watched his annoyed flatmate. Sherlock had sat through hours of news broadcasts and drama shows and cheesy movies, and John had always turned it off when he demanded it. Now he was starting to understand that this show was different. And that John probably was (for the first time) going to win this argument.

"How could that show possibly be more important than my case?"

"It's not. But you can watch it if you'd like."

Sherlock stared coldly back as a reply.

"Just a few minutes, not the whole thing. What harm would it do?"

"Fine." The other armchair was dragged across the rug and Sherlock sat down in it next to John's. "Start at the beginning."

"Mrs. Hudson brought up tea, if you want any..."

"Play, John."