But of course!
who is the big spoon/little spoon: More often than not, John is the big spoon.
what is their favorite non-sexual activity: Doing casework, nearly dying.
who uses all the hot water in the morning: Sherlock.
what they order from take out: Chinese.
what is the most trivial thing they fight over: Everything, but they love it. It’s actually flirting, but don’t tell John.
who does most of the cleaning: Mrs. Hudson. John comes second.
what has a season pass in their DVR: I don’t even know what most British television is, but Sherlock secretly records anything featuring That Actor.
who leaves their stuff around: Sherlock.
who remembers to buy the milk: John.
who remembers anniversaries: Both of them are surprisingly okay about this. Sherlock remembers things when they’re important, and John is important.