How would Mycroft end up babysitting to begin with? I feel like he’d want to interact with Sherlock when he’s small because it’d let them both be as affectionate as they want without their usual reservations. Jawn would be incredulous at best about My. At least at first.

squeakpigsrevenge:

sadieandmo:

Sadie: That’s a very good point. John would fight tooth and nail to keep that ‘tough guy’ exterior up around Mycroft…his is not a baby, should anyone need to be reminded. But, Sherlock *does* look awfully content to sit in his older brother’s lap. And Mycroft, while still being his normal stuffy, proper self, doesn’t sound as nearly condescending as he usually does. And John is starting to feel a bit left out.

A cuddle would be strong motivation. And Mycroft is be an excellent story teller. Sherlock brought him John’s favorite book to read. The tiny doctor would creep closer and closer until he was practically in Mycroft’s lap anyways. By the time we learn why Grey crayon is so grumpy John is fully in his lap and helping to turn the page.

Sadie: Mycroft would be relieved…as narrow as Jawn’s little bum is, and as tiny as Sherlock could origami in his elbows and knees, he still had to hold onto both of them so they wouldn’t tumble right out of the chair they were crowded in. Hard to do that and turn the pages…let alone keep both boys from snipping at each other over who’s turn it was to turn said page.