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.

“Don’t be vile, Mycroft.” Sherlock said, flopping back down next to John.
Mycroft pulled the nappy over John’s bits, taping it closed. He smiled to himself as he watched the tension drain from the little doctor’s chest. “Not vile, brother mine, pragmatic. And anyways spoon feeding two fussy little boys doesn’t sound like an enjoyable time.”
“We can feed our selfs!”
“Yes, just as you can change yourselves.”
Sherlock huffed and curled into John. The nappy change had left the little doctor subdued, which left it up to Sherlock to air their self righteous indignation.
“I was thinking chips.” Mycroft cut in before Sherlock could utter a peep.

Sadie: Sherlock sat straight up as if on a loaded spring, knocking John aside. “Chips? You mean it?”

Mycroft had removed John’s trousers completely, leaving him in just a nappy and jumper for convenience (the fact that he looked incredibly adorable a fortunate, but unrelated, bonus), and now took his hands to help him sit up. “Careful, Sherlock…and yes, I meant it. Chips, fish, vinegar, and greasy newspaper; all of it. You only have to promise that you’ll finish most of it instead of poking at it.”