Ok but

Uni!lock

John preparing for his biggest med exam so far, and Sherlock taking it more seriously than anything else in his entire life

John coming into the kitchen one morning to find a diagram of a hypertrophic heart taped to the fridge with a note

How many things in this fridge could make me worse? Explain the mechanisms of heart failure

And John shaking his head and smiling as he takes a look inside, quietly reciting to himself

Sherlock popping into the loo while John takes a shower, twisting the temperature knob all the way to the right while shouting

Explain the mechanisms your body uses to warm itself in a cold situation!

And John yelping out his answer, frantically trying to bat Sherlock’s hand back out of the curtain

John reaching for the tea bags only to find the box taped shut, and Sherlock shouting

Explain the consequences of eating nothing but tea and toast for our entire lives!

And John trying hard not to laugh as he explains that they’re not nearly old enough to worry about that yet

John rolling over in the middle of the night to find Sherlock staring down at him, whispering his name over and over again until he opens his eyes, and this time there’s no shouting, there’s no demanding, there’s no ice water or notes; there’s nothing but a quiet, uncertain whisper

Explain to me why you love me?

And John pulling him close as he murmurs a completely non-scientific explanation into his curls, and Sherlock’s smile lighting up the dark room