Inspired by one of cumberqueen on tumblr's hilarious "Imagine Sherlock as a Father" posts.
cumberqueen(dot)tumblr(dot)com/post/22188869298/imagine-sherlock-as-a-father-pt-2
John can hear Hamish wailing all the way from upstairs as he fumbles to unlock the front door, both hands laden down with groceries. He gets the door open and shouts up the stairs.
"Sherlock, what's wrong?"
Sherlock, carrying the screaming, squirming bundle, looks sheepish.
"What did you do? Why's he crying?"
"Well, John... do you remember when he was a toddler, and he found his way into the Tesco's bag, and you took a photograph?"
John glares, his patience waning as their son continues to bawl. Sherlock chews on his lip for a moment before continuing.
"Well, while you were out, I came across it, and I may have told Hamish that while most parents get babies from the hospital, we got him at the Tesco."
John can't help but giggle. "Alright, Sherlock, that's actually quite cute. But why is he throwing such a fit?"
"Well, after I told him, he remembered you saying you were heading to Tesco's, and he may have gotten the idea that you were out shopping for a replacement."
"Oh, Hal." John smiles, reaching out to his son, who climbs into his arms. "C'mere, I promise, I was just getting food. You're more than enough for your father and myself!"
Then, as if to reassure him, John empties out the contents of every single bag.