Games:
"Tedious game." Sherlock waved his hand dismissively.
"This was your idea!" John moved his queen. "Checkmate. You've been slacking off."
"I've been busy, John, thinking."
"About what? There hasn't been a case in months."
"…"
"Are we going to play again?"
"I don't feel like it."
"It's CHESS, Sherlock, it's an ancient game with a very rich and fascinating history."
"It's dull, repetitive, and should have died with the Aztecs."
"French."
"What?"
"Chess is French."
"John, I'm trying to say that it's stupid and pointless and we both know it."
"You're just saying that because I've won the last five games!"